ORCID Profile
0000-0002-4012-330X
Current Organisations
Universidad Católica San Antonio de Murcia
,
University of Melbourne
,
University of Technology Sydney
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Nanomaterials | Synthesis of Materials | Chemical Engineering | Nanotechnology | Nanobiotechnology | Membrane and Separation Technologies
Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in the Physical Sciences | Industrial Energy Conservation and Efficiency | Industrial Gases | Expanding Knowledge in Engineering | Expanding Knowledge in the Biological Sciences |
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/CH19109
Abstract: Reversible addition–fragmentation chain transfer (RAFT) polymerization initiated by a radical-forming redox reaction between a reducing and an oxidizing agent (i.e. ‘redox RAFT’) represents a simple, versatile, and highly useful platform for controlled polymer synthesis. Herein, the potency of a wide range of redox initiation systems including enzyme-mediated redox reactions, the Fenton reaction, peroxide-based reactions, and metal-catalyzed redox reactions, and their application in initiating RAFT polymerization, are reviewed. These redox-RAFT polymerization methods have been widely studied for synthesizing a broad range of homo- and co-polymers with tailored molecular weights, compositions, and (macro)molecular structures. It has been demonstrated that redox-RAFT polymerization holds particular promise due to its excellent performance under mild conditions, typically operating at room temperature. Redox-RAFT polymerization is therefore an important and core part of the RAFT methodology handbook and may be of particular importance going forward for the fabrication of polymeric biomaterials under biologically relevant conditions or in biological systems, in which naturally occurring redox reactions are prevalent.
Publisher: American Chemical Society (ACS)
Date: 05-06-2009
DOI: 10.1021/MA900156Y
Publisher: Wiley
Date: 09-2016
Publisher: Elsevier BV
Date: 10-2021
Publisher: Wiley
Date: 12-09-2008
DOI: 10.1002/POLA.22985
Publisher: American Chemical Society (ACS)
Date: 11-04-2016
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.BIORTECH.2022.127984
Abstract: Sewage sludge (SS) is increasingly used as an environment functional material to reduce or control pollution and improve plant growth because of the large amounts of carbon and essential plant nutrients in it. To achieve the best application results, it is essential to comprehensively review recent progress in SS utilization. This review aims to fill the gaps in knowledge by describing the properties of SS, and its usage as adsorbents, catalysts and fertilizers, and certain application mechanisms. Although SS generates several benefits for the environment and humans, many challenges still exist to limit the application, including the risks posed by potentially toxic substances (e.g., heavy metals) in SS. Therefore, future research directions are discussed and how to make SS applications more feasible in terms of technology and economy.
Publisher: Elsevier BV
Date: 04-2011
Publisher: Wiley
Date: 18-02-2014
DOI: 10.1002/POLA.27111
Abstract: A series of novel hiphilic diblock copolymers composed of hydrophilic linear poly(ethylene glycol) (PEG) and linear brush hydrophobic polydimethylsiloxane (PDMS) were synthesized. Three different molecular weights of monomethyl ether PEG were initially functionalized with 2‐bromo iso butyryl bromide to afford macroinitiators suitable for atom‐transfer radical polymerization. The macroinitiators were characterized by gel permeation chromatography, 1 H and 13 C nuclear magnetic resonance spectroscopic analysis and matrix‐assisted laser desorption ionization time‐of‐flight mass spectroscopy. The three different molecular weight macroinitiators were then chain extended with monomethacryloxypropyl‐terminated PDMS and photoactive 2‐(methylacyloyloxy)ethyl anthracene‐9‐carboxylate in different molar ratios to afford a series of photoresponsive hiphilic diblock copolymers with high conversions. Self‐assembly of these linear–linear brush diblock copolymers in N , N ‐dimethylformamide afforded nanoparticles with hydrodynamic diameters ( d H ) ranging from 41 to 268 nm, as determined by dynamic light scattering analysis. Crosslinking and stabilization of the nanoparticles was achieved via [4+4] photodimerization of the anthracene moieties upon exposure to UV radiation at 365 nm with the reverse reaction studied at a wavelength of 254 nm. Transmission electron microscopy revealed that the self‐assembled nanoparticles and their crosslinked derivatives had spherical morphologies. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014 , 52 , 1251–1262
Publisher: Elsevier BV
Date: 02-2016
Publisher: Elsevier BV
Date: 05-2022
Publisher: MDPI AG
Date: 31-10-2020
DOI: 10.3390/MATH8111904
Abstract: The implied volatility index is a forward-looking indicator of fear among stock market participants. We examine the extent to which the connectedness of fear among global stock markets is driven by the cross-country connectedness of economic policy uncertainty (EPU). We use data on stock market fear and EPU indices for 13 countries, which spans from January 2011 to December 2018. To measure the connectedness among stock market fear and EPU of our s le countries, we employ two connectedness models. A cross-sectional regression model is further employed to ascertain the extent to which EPU connectedness between two countries explains the connectedness of fear between their stock markets, while controlling for bilateral linkage and country-specific factors. We find that EPU connectedness between any two partner countries significantly drives the connectedness of fear between their stock markets. The driving potential not only holds for short- and long-term connectedness, but also after controlling for bilateral linkages (bilateral trade, geographical distance, common language) and country-specific (trade and financial openness of the transmitter country) factors indicating robustness in our results.
Publisher: Wiley
Date: 11-06-2018
Publisher: Elsevier BV
Date: 05-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY00570A
Abstract: A two-pot synthetic strategy was developed to accomplish sequence control in a completely alternating fashion for co-polymers of intrinsic microporosity.
Publisher: Wiley
Date: 25-04-2006
DOI: 10.1002/APP.23309
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 10-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2TA08317E
Abstract: By selecting appropriate polymer precursors, we developed a novel cryogel solar vapor generator for seawater desalination with high intermediate water content for lower evaporation enthalpy and interconnected macropores for rapid water replenishment.
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 11-2020
Publisher: Wiley
Date: 18-12-2008
DOI: 10.1002/POLA.23205
Publisher: American Chemical Society (ACS)
Date: 18-09-2017
Publisher: American Chemical Society (ACS)
Date: 21-01-2016
Publisher: American Chemical Society (ACS)
Date: 31-08-2015
Publisher: American Chemical Society (ACS)
Date: 23-02-2016
Abstract: Burst release of a payload from polymeric particles upon photoirradiation was engineered by altering the cross-linking density. This was achieved via a dual cross-linking concept whereby noncovalent cross-linking was provided by cyclodextrin host-guest interactions, and irreversible covalent cross-linking was mediated by continuous assembly of polymers (CAP). The dual cross-linked particles (DCPs) were efficiently infiltrated (∼80-93%) by the biomacromolecule dextran (molecular weight up to 500 kDa) to provide high loadings (70-75%). Upon short exposure (5 s) to UV light, the noncovalent cross-links were disrupted resulting in increased permeability and burst release of the cargo (50 mol % within 1 s) as visualized by time-lapse fluorescence microscopy. As sunlight contains UV light at low intensities, the particles can potentially be incorporated into systems used in agriculture, environmental control, and food packaging, whereby sunlight could control the release of nutrients and antimicrobial agents.
Publisher: Wiley
Date: 10-2014
DOI: 10.1002/POLA.27401
Publisher: American Chemical Society (ACS)
Date: 19-11-2020
Abstract: The ability to modify substrates with thin polymer films allows for the tailoring of surface properties, and through combination of patterning finds use in a large variety of applications such as electronics and lab-on-chip devices. Although many techniques can be used to afford polymer-modified surfaces such as surface-initiated polymerization or layer-by-layer methodologies, their stability in a wide range of environments as well as their ability to target specific chemistry are critical factors to enable their successful application. In this paper, we report a facile technique in creating nanoscale polymer thin films using solid-state continuous assembly of polymers via ring-opening metathesis polymerization (ssCAP
Publisher: American Chemical Society (ACS)
Date: 13-05-2008
DOI: 10.1021/MA702404T
Publisher: Wiley
Date: 15-09-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4PY01123F
Abstract: Nontoxic and acid-degradable polymer vesicles were synthesized as drug carriers. In vitro dose–response cytotoxicity studies suggested that the drug-loaded polymer vesicles were more efficient in delivering cis-platin into cancer cells compared to the internalization of the free drug.
Publisher: Institution of Engineering and Technology (IET)
Date: 29-12-2020
DOI: 10.1049/MNA2.12012
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA09070J
Abstract: Two-dimensional nanosheets as building blocks for the preparation of high-performance gas separation membranes.
Publisher: Wiley
Date: 14-06-2023
Abstract: Atmospheric water harvesting (AWH) has been recognized as a next‐generation technology to alleviate water shortages in arid areas. However, the current AWH materials suffer from insufficient water adsorption capacity and high‐water retention, which hinder the practical application of AWH materials. In this study, we developed a novel dual‐layered hydrogel (DLH) composed of a light‐to‐heat conversion layer (LHL) containing novel polydopamine‐manganese nanoparticles (PDA−Mn NPs) and a water adsorption layer (WAL) made of 2‐(acryloyloxyethyl) trimethylammonium chloride (AEtMA). The WAL has a strong ability to adsorb water molecules in the air and has a high‐water storage capacity, and the PDA−Mn NPs embedded in the LHL have excellent photothermal conversion efficiency, leading to light‐induced autonomous water release. As a result, the DLH displays a high‐water adsorption capacity of 7.73 g g −1 under optimal conditions and could near‐quantitatively release captured water within 4 h sunlight exposure. Coupled with its low cost, we believed that the DLH will be one of the promising AWH materials for practical applications.
Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/CH13425
Abstract: Water-soluble poly(2-hydroxyethyl acrylate) (PHEA)-based core cross-linked star polymers were efficiently synthesised with high macroinitiator-to-star-conversion ( %) in a one-pot system via single electron transfer-living radical polymerisation. The star polymers display excellent water solubility and the pendant hydroxyl groups provide a platform for facile post-functionalisation with various molecules. In demonstrating this, a photo-isomerisable molecule, 4-(phenylazo)benzoic acid was conjugated onto the preformed stars through partial esterification of the available hydroxyl groups (5–20 %). The azobenzene functionalised stars were subsequently employed to form reversible inclusion complexes with α-cyclodextrin.
Publisher: Wiley
Date: 29-08-2006
DOI: 10.1002/APP.24202
Publisher: Wiley
Date: 26-08-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CC06890A
Abstract: A reduced copper metal–organic framework (rCu-MOF) containing Cu I ions was prepared and employed as a catalyst for ‘Click’ reactions. The rCu-MOF presents higher catalytic activity, good structural stability as well as facile recyclability compared to traditional copper halide catalysts.
Publisher: Wiley
Date: 09-2017
Abstract: The ultrasonic irradiation of aqueous solution is demonstrated to be a suitable source of initiating radicals for a controlled radical polymerization when conducted in the presence of a thiocarbonylthio-containing reversible addition-fragmentation chain transfer (RAFT) agent. This allows for a highly "green" method of externally regulated/controlled polymerization with a potentially broad scope for polymerizable monomers and/or polymer structures.
Publisher: American Chemical Society (ACS)
Date: 14-06-2016
DOI: 10.1021/ACS.CHEMREV.6B00008
Abstract: Recent advances in controlled/living polymerization techniques and highly efficient coupling chemistries have enabled the facile synthesis of complex polymer architectures with controlled dimensions and functionality. As an ex le, star polymers consist of many linear polymers fused at a central point with a large number of chain end functionalities. Owing to this exclusive structure, star polymers exhibit some remarkable characteristics and properties unattainable by simple linear polymers. Hence, they constitute a unique class of technologically important nanomaterials that have been utilized or are currently under audition for many applications in life sciences and nanotechnologies. This article first provides a comprehensive summary of synthetic strategies towards star polymers, then reviews the latest developments in the synthesis and characterization methods of star macromolecules, and lastly outlines emerging applications and current commercial use of star-shaped polymers. The aim of this work is to promote star polymer research, generate new avenues of scientific investigation, and provide contemporary perspectives on chemical innovation that may expedite the commercialization of new star nanomaterials. We envision in the not-too-distant future star polymers will play an increasingly important role in materials science and nanotechnology in both academic and industrial settings.
Publisher: American Chemical Society (ACS)
Date: 06-04-2023
Publisher: American Chemical Society (ACS)
Date: 27-06-2022
Publisher: Elsevier BV
Date: 2019
DOI: 10.2139/SSRN.3366257
Publisher: Elsevier BV
Date: 2019
DOI: 10.2139/SSRN.3366259
Publisher: Wiley
Date: 08-2017
Publisher: Elsevier BV
Date: 03-2019
Publisher: Wiley
Date: 17-05-2016
Publisher: CSIRO Publishing
Date: 2018
DOI: 10.1071/CH18281
Abstract: Fenton cancer therapy as a new methodology for the treatment of tumour cells is largely restricted owing to the low stability, high aggregation, and poor selectivity of reported nanoparticles. In this study, an improved approach for the selective destruction of cancer cells is reported. Metal–organic framework (MOF) nanoparticles were synthesized and reduced via a hydrothermal method, and then PEGylated through the surface-initiated atom transfer radical polymerization (SI-ATRP) reaction to produce a PEGylated reduced MOF (P@rMOF). The ratio of PEG to nanoparticles was used to optimize the size and aggregation of the nanoparticles, with 2P@rMOF (2 : 1 mass ratio) having the smallest hydrodynamic diameter. The nanoparticles were further conjugated with folic acid for cell targeting. In vitro cell uptake experiments demonstrated that the internalization of 2P@rMOF-FA nanoparticles into cancer cells (HeLa) was almost 3-fold that of normal cells (NIH-3T3). In the presence of 2P@rMOF-FA, the HeLa cell viability decreased dramatically to 22 %, whereas the NIH-3T3 cell viability remained higher than 80 % after 24 h incubation. The selectivity index for 2P@rMOF-FA is 4.48, which is significantly higher than those reported in the literature for similar strategies. This work thus demonstrates the most stable and selective nanoparticle system for the treatment of cancer cells using the cell’s own H2O2.
Publisher: American Chemical Society (ACS)
Date: 13-02-2020
Publisher: Elsevier BV
Date: 04-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4CC08759C
Abstract: Surface-confined ultra-thin polyrotaxane (PRX)-based films with tunable composition, surface topology and swelling characteristics were prepared by solid-state continuous assembly of polymers (ssCAP).
Publisher: Springer Science and Business Media LLC
Date: 15-12-2022
Publisher: Elsevier BV
Date: 09-2020
Publisher: American Chemical Society (ACS)
Date: 09-01-2020
DOI: 10.26434/CHEMRXIV.11542431
Abstract: Thin film composite (TFC) membranes have attracted increasing interest to meet the demands of industrial gas separation. However, the development of high performance TFC membranes within their current configuration faces two key challenges: (i) the thickness-dependent gas permeability of polymeric materials (mainly polydimethylsiloxane (PDMS)) and (ii) the geometric restriction effect due to the limited pore accessibility of porous substrates. Here we demonstrate for the first time that the incorporation of trace (~1.8 wt%) amounts of amorphous metal-organic framework (aMOF) nanosheets into the gutter layer of TFC assemblies can simultaneously address these two limitations, with experimental evidence revealing the creation of rapid gas diffusion pathways along horizontal direction. Leveraging this strategy, we successfully fabricated a novel TFC membrane, consisting of a PDMS/aMOF gutter and an ultrathin (~54 nm) poly(ethylene glycol) top selective layer i via /i surface-initiated atom transfer radical polymerization (ATRP). The complete TFC membrane exhibits excellent processability and the highest CO sub /sub permeance (1,990 GPU with a CO sub /sub /N sub /sub ideal selectivity of 39) yet observed for a TFC membrane employing a PDMS gutter layer. This study reveals an avenue for the design and fabrication of a new TFC membrane system with unprecedented gas separation performance.
Publisher: American Chemical Society (ACS)
Date: 04-11-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY00530F
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 05-2021
Publisher: Royal Society of Chemistry
Date: 2020
Publisher: Wiley
Date: 12-07-2018
Abstract: The use of hemoglobin (Hb) contained within red blood cells to drive a controlled radical polymerization via a reversible addition-fragmentation chain transfer (RAFT) process is reported for the first time. No pre-treatment of the Hb or cells was required prior to their use as polymerization catalysts, indicating the potential for synthetic engineering in complex biological microenvironments without the need for ex vivo techniques. Owing to the naturally occurring prevalence of the reagents employed in the catalytic system (Hb and hydrogen peroxide), this approach may facilitate the development of new strategies for in vivo cell engineering with synthetic macromolecules.
Publisher: Society of Rheology
Date: 11-2021
DOI: 10.1122/8.0000313
Publisher: Wiley
Date: 11-09-2012
Abstract: The first ex le of core cross-linked star (CCS) polyrotaxane was prepared using the poly(ϵ-caprolactone) (PCL) CCS three-dimensional (3D) scaffold. The 3D CCS polymer was firstly prepared through the "arm-first" approach. Then, the "arms" of the resultant PCL CCS polymer were threaded with α-cyclodextrins (α-CDs). The threaded α-CDs were permanently locked by the "click" reaction of terminal alkyne functionalities of the star polymers with the azide-functionalized end caps to afford the CCS polyrotaxanes. All analytical results confirm the formation of the CCS polyrotaxanes and reveal their characteristics, including fluorescence under UV, a channel-type crystalline structure, a two-step thermal decomposition, and a unique core-shell structure in great contrast to the polymer precursors.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6PY01994C
Abstract: In this study, we reported on the discovery that trithiocarbonates (RAFT agents) can act as intrinsic photocatalyst to significantly reduce the oxygen level in a controlled radical polymerization under visible light irridation.
Publisher: American Chemical Society (ACS)
Date: 05-03-2021
Publisher: American Chemical Society (ACS)
Date: 15-03-2008
DOI: 10.1021/MA7028117
Publisher: Wiley
Date: 06-10-2005
DOI: 10.1002/POLA.21047
Publisher: Wiley
Date: 03-05-2017
Abstract: Fine control over the architecture and/or microstructure of synthetic polymers is fast becoming a reality owing to the development of efficient and versatile polymerization techniques and conjugation reactions. However, the transition of these syntheses to automated, programmable, and high-throughput operating systems is a challenging step needed to translate the vast potential of precision polymers into machine-programmable polymers for biological and functional applications. Chain-growth polymerizations are particularly appealing for their ability to form structurally and chemically well-defined macromolecules through living/controlled polymerization techniques. Even using the latest polymerization technologies, the macromolecular engineering of complex functional materials often requires multi-step syntheses and purification of intermediates, and results in sub-optimal yields. To develop a proof-of-concept of a framework polymerization technique that is readily amenable to automation requires several key characteristics. In this study, a new approach is described that is believed to meet these requirements, thus opening avenues toward automated polymer synthesis.
Publisher: Wiley
Date: 11-06-2018
Abstract: A novel composite membrane consisting of an interconnected MOF scaffold coated with cross-linked poly(ethylene glycol) (PEG) has been developed. As a result of its unique structure, the membrane shows an exceptional 18-fold permeability enhancement as compared to pristine PEG membranes, without compromising the selectivity. This performance is unattainable with current mixed-matrix membranes (MMMs). Our optimized membrane has a permeability of 2700 Barrer with a CO
Publisher: The Royal Society of Chemistry
Date: 08-12-2021
DOI: 10.1039/9781839165436-00232
Abstract: To minimize the cost and energy consumption of liquid separations, there is a widespread research interest in developing newly emerging materials, such as supramolecular materials. Supramolecular materials with non-covalent interactions and dynamic bonds show robust and reversible physiochemical properties and have advantages for liquid separations due to their easy synthesis by simply mixing appropriate counterparts, fascinating reversibility of the ensembles, and erse functionalities. Molecular recognition-driven self-assembly plays a key role in the fabrication of supramolecular aggregates and networks through cross-linking and block copolymerization. Block copolymers prohibit the degradation or depolymerization of supramolecular structures under various physicochemical and biological conditions. Water-based supramolecular membranes that are sustainable in harsh conditions and effective in contaminants’ removal have attained much interest. Polyelectrolytes are the other suitable precursors for the preparation of supramolecular materials. Self-healing and stimuli-responsiveness are also discussed as the novel features of these materials with erse applications as membranes and adsorbents. Finally, the main challenges and perspectives in the fabrication of supramolecular membranes are represented.
Publisher: Wiley
Date: 07-2019
Abstract: In this review, the power of a classical chemical reaction, the Fenton reaction for initiating radical polymerizations, is demonstrated. The reaction between the Fenton reagents (i.e., Fe
Publisher: IOP Publishing
Date: 12-03-2021
Abstract: A novel magnetoresistance material based on magnetorheological fluid (MRF) was developed for applications in micro-displacement sensor. The MRF s les were fabricated by dispersing carbonyl iron particles (CIP) into a magnetic ion liquid (MIL) composed of 1-methylethyl ether-3-butylimidazole cation and [Fe 2 Cl 7 ] − anions. The magnetoresistance characteristics were also systematically tested. It was found that the resistance value of MRF with a CIP content of 20 vol% decreased from 125 to 24.4 KΩ when increasing the magnetic field from 0 to 0.2 T. A sensor device was developed to study the displacement sensing characteristics of MRF, and found that the sensor had a high sensitivity of 0.1 Ω μ m −1 and a high resolution of 10.0 μ m. The excellent performance can be attributed to the low modulus and good stability of the MIL matrix, allowing for easy change of the resistance by controlling the magnetic field or displacement. In summary, these unique characters make the present MRF a promising magnetoresistance material with potential applications in displacement sensor.
Publisher: Elsevier BV
Date: 07-2016
Publisher: American Chemical Society (ACS)
Date: 08-09-2014
DOI: 10.1021/JP5060974
Abstract: Understanding, and improving, the behavior of thin surface films under exposure to externally applied forces is important for applications such as mimicking biological membranes, water evaporation mitigation, and recovery of oil spills. This paper demonstrates that the incorporation of a water-soluble polymer into the surface film composition, i.e., formation of a three-duolayer system, shows improved performance under an applied dynamic stress, with an evaporation saving of 84% observed after 16 h, compared to 74% for the insoluble three-monolayer alone. Canal viscometry and spreading rate experiments, performed using the same conditions, demonstrated an increased surface viscosity and faster spreading rate for the three-duolayer system, likely contributing to the observed improvement in dynamic performance. Brewster angle microscopy and dye-tagged polymers were used to visualize the system and demonstrated that the duolayer and monolayer system both form a homogeneous film of uniform, single-molecule thickness, with the excess material compacting into small floating reservoirs on the surface. It was also observed that both components have to be applied to the water surface together in order to achieve improved performance under dynamic conditions. These findings have important implications for the use of surface films in various applications where resistance to external disturbance is required.
Publisher: Routledge
Date: 10-11-2016
Publisher: Elsevier BV
Date: 11-2020
Publisher: American Chemical Society (ACS)
Date: 22-04-2019
Publisher: Wiley
Date: 11-09-2006
DOI: 10.1002/POLA.21690
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8PY00832A
Abstract: A nanostructured MOF composite was utilized as an enzyme mimic for the generation of hydroxyl radicals from hydrogen peroxide, which can subsequently initiate RAFT polymerizations in aqueous or organic media.
Publisher: Elsevier BV
Date: 03-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7EE02820B
Abstract: A 30 nm thick polymeric membrane on a metal–organic framework substrate was fabricated via a bottom-up approach, exhibiting excellent CO 2 /N 2 separation performance.
Publisher: Springer Science and Business Media LLC
Date: 11-02-2016
DOI: 10.1038/SREP20779
Abstract: This study presents the development of a novel solid state photocatalyst for the photoinduced controlled radical polymerization of methacrylates under mild UV irradiation (λ max ≈ 365 nm) in the absence of conventional photoinitiators, metal-catalysts or dye sensitizers. The photocatalyst design was based on our previous finding that organic amines can act in a synergistic photochemical reaction with thiocarbonylthio compounds to afford well controlled polymethacrylates under UV irradiation. Therefore, in the current contribution an amine-rich polymer was covalently grafted onto a solid substrate, thus creating a heterogeneous catalyst that would allow for facile removal, recovery and recyclability when employed for such photopolymerization reactions. Importantly, the polymethacrylates synthesized using the solid state photocatalyst (ssPC) show similarly excellent chemical and structural integrity as those catalysed by free amines. Moreover, the ssPC could be readily recovered and re-used, with multiple cycles of polymerization showing minimal effect on the integrity of the catalyst. Finally, the ssPC was employed in various photo-“click” reactions, permitting high yielding conjugations under photochemical control.
Publisher: Wiley
Date: 15-09-2020
Publisher: American Chemical Society (ACS)
Date: 13-07-2006
DOI: 10.1021/MA060934T
Publisher: American Chemical Society (ACS)
Date: 13-11-2014
DOI: 10.1021/MA502008J
Publisher: American Chemical Society (ACS)
Date: 24-10-2018
Abstract: Ultrathin metal-organic framework (MOF) nanosheets show great potential in various separation applications. In this study, MOF nanosheets are incorporated as a gutter layer in high-performance, flexible thin-film composite membranes (TFCMs) for CO
Publisher: Elsevier BV
Date: 10-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00894C
Abstract: Hydrogel-based solar water purification technology has been recognized as a promising alternative to existing energy-intensive technologies. This is a timely review of the recent 3 years, focusing on design principles and remaining challenges.
Publisher: American Chemical Society (ACS)
Date: 16-03-2023
Publisher: American Chemical Society (ACS)
Date: 13-05-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY00808A
Abstract: The photolytic stability of RAFT agents under blue LED irradiation has been investigated with regard to photopolymerization reactions.
Publisher: Wiley
Date: 06-09-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY01401E
Abstract: Core cross-linked star polymers were synthesized via cationic RAFT polymerization and three different approaches in combination with a radical RAFT mechanism.
Publisher: American Chemical Society (ACS)
Date: 17-05-2012
DOI: 10.1021/MZ300169M
Abstract: A facile, highly efficient, and metal-free synthesis of well-defined polyester-based core cross-linked star (CCS) polymers with yields of up to 96 % was achieved via an organic catalyst (i.e., methanesulfonic acid) mediated ring-opening polymerization (ROP) at room temperature, through either a two-pot or a one-pot, two-step strategy. CCS polymers with narrow molecular weight distributions (PDI ≤ 1.3) and macroinitiator (MI) conversions of 90-96% were prepared using poly(ε-caprolactone) (PCL) MIs with molecular weights ranging from 9.9 to 36.2 kDa and [4,4'-bioxepane]-7,7'-dione (BOD) as the cross-linker. Furthermore, transesterification was identified as being responsible for the small percentage of unincorporated low molecular weight polymer remaining and star-star couplings in the star formation. Compared to CCS polymers synthesized via the methanesulfonic acid-mediated ROP, CCS polymers prepared via ROP mediated by high transesterification rate catalysts (i.e., stannous octoate (Sn(Oct)
Publisher: American Chemical Society (ACS)
Date: 06-10-2021
Publisher: American Chemical Society (ACS)
Date: 27-06-2019
DOI: 10.1021/ACS.ACCOUNTS.9B00111
Abstract: Climate change due to anthropogenic carbon dioxide emissions (e.g., combustion of fossil fuels) represents one of the most profound environmental disasters of this century. Equipping power plants with carbon capture and storage (CCS) technology has the potential to reduce current worldwide CO
Publisher: Informa UK Limited
Date: 18-06-2020
Publisher: American Chemical Society (ACS)
Date: 25-03-2021
Publisher: Elsevier BV
Date: 07-2018
Publisher: American Chemical Society (ACS)
Date: 20-09-2017
Abstract: A novel reduced iron metal-organic framework nanoparticle with cytotoxicity specific to cancer cells is presented. This nanoparticle was prepared via a hydrothermal method, reduced using hydroquinone, and finally conjugated with folic acid (namely, rMOF-FA). The synthesized nanoparticle shows the controlled release of iron in an acidic ex-vivo environment. Iron present on the rMOF-FA and released into solution can react with high levels of hydrogen peroxide found specifically in cancer cells to increase the hydroxyl radical concentration. The hydroxyl radicals oxidize proteins, lipids, and/or DNA within the biological system to decrease cell viability. In vitro experiments demonstrate that this novel nanoparticle is cytotoxic to cancer cells (HeLa) through generation of OH
Publisher: American Chemical Society (ACS)
Date: 22-07-2201
Publisher: Elsevier BV
Date: 06-2022
Publisher: Wiley
Date: 08-11-2022
Abstract: Solar steam generator (SSG) systems have attracted increasing attention, owing to its simple manufacturing, material abundance, cost‐effectiveness, and environmentally friendly freshwater production. This system relies on photothermic materials and water absorbing substrates for a clean continuous distillation process. To optimize this process, there are factors that are needed to be considered such as selection of solar absorber and water absorbent materials, followed by micro/macro‐structural system design for efficient water evaporation, floating, and filtration capability. In this contribution, we highlight the general interfacial SSG concept, review and compare recent progresses of different SSG systems, as well as discuss important factors on performance optimization. Furthermore, unaddressed challenges such as SSG's cost to performance ratio, filtration of untreatable micropollutants/microorganisms, and the need of standardization testing will be discussed to further advance future SSG studies.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA13066E
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5EE02433A
Abstract: Defect-free and cross-linked ultra-thin (sub 100 nm) film composite membranes have been prepared. The membrane materials formed exhibited significantly high CO 2 permeances of over 1200 GPU as well as excellent CO 2 /N 2 selectivity of over 40.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY00840A
Abstract: A novel tertiary amine catalyst and trithiocarbonate synergistic photo-induced controlled radical polymerization of methacrylates has been realized under mild UV irradiation, yielding polymethacrylates with low molecular weight distributions and excellent end-group fidelity.
Publisher: American Chemical Society (ACS)
Date: 15-06-2015
Publisher: Elsevier BV
Date: 02-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC06694H
Abstract: We prepared novel polymer grafted MOF nanoparticles for the first time with excellent water dispersity and significantly enhanced catalytic effect.
Publisher: Informa UK Limited
Date: 03-02-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1PY00362C
Publisher: Wiley
Date: 10-06-2020
DOI: 10.1002/PEN.25416
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA02859G
Abstract: Novel soft nanoparticles with tunable morphologies were incorporated into thin film composite membrane system for efficient CO 2 capture applications.
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 08-2017
Publisher: Elsevier BV
Date: 2022
Publisher: Wiley
Date: 08-04-2014
Abstract: The application of cyclodextrin (CD)-based host-guest interactions towards the fabrication of functional supramolecular assemblies and hydrogels is of particular interest in the field of biomedicine. However, as of late they have found new applications as advanced functional materials (e.g., actuators and self-healing materials), which have renewed interest across a wide range of fields. Advanced supramolecular materials synthesized using this noncovalent interaction, exhibit specificity and reversibility, which can be used to impart reversible cross-linking, specific binding sites, and functionality. In this review, various functional CD-based supramolecular assemblies and hydrogels will be outlined with the focus on recent advances. In addition, an outlook will be provided on the direction of this rapidly developing field.
Publisher: Elsevier BV
Date: 03-2019
Publisher: American Chemical Society (ACS)
Date: 16-07-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5NR08840B
Abstract: Iron dopamine nanoparticles (FeDA NPs) are incorporated into a nanoscale thick polyethylene glycol (PEG) matrix for the first time, to form ultra-thin film composite mixed matrix membranes (UTFC-MMMs) via a recently developed continuous assembly of polymers (CAP) nanotechnology. The FeDA NPs are prepared by in situ nano-complexation between Fe(3+) and DA and have a particle size that can be varied from 3 to 74 nanometers by adjusting the molar ratio of DA to Fe(3+) ion. The cross-linked selective layer with sub 100 nanometer thickness is prepared by atom transfer radical polymerisation of a mixture of PEG macrocross-linkers and FeDA NPs on top of a highly permeable poly(dimethyl siloxane) (PDMS) prelayer, which is spin-coated onto a porous polyacrylonitrile (PAN) substrate. The incorporation of the FeDA NPs within the PEG-based selective layer is confirmed by XPS analysis. The UTFC-MMMs (thickness: ∼45 nm) formed present excellent gas separation performance with a CO2 permeance of ∼1200 GPU (1 GPU = 10(-6) cm(3) (STP) cm(-2) s(-1) cmHg(-1)) and an enhanced CO2/N2 selectivity of over 35, which is the best performance for UTFC membranes in the reported literature.
Publisher: Elsevier BV
Date: 02-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA05278H
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA14170E
Publisher: American Chemical Society (ACS)
Date: 20-07-2015
DOI: 10.1021/ACS.BIOMAC.5B00692
Abstract: Novel cisplatin (CDDP)-loaded, polypeptide-based vesicles for the targeted delivery of cisplatin to cancer cells have been prepared. These vesicles were formed from biocompatible and biodegradable maleimide-poly(ethylene oxide)114-b-poly(L-glutamic acid)12 (Mal-PEG114-b-PLG12) block copolymers upon conjugation with the drug itself. CDDP conjugation forms a short, rigid, cross-linked, drug-loaded, hydrophobic block in the copolymer, and subsequently induces self-assembly into hollow vesicle structures with average hydrodynamic diameters (Dh) of ∼ 270 nm. CDDP conjugation is critical to the formation of the vesicles. The reactive maleimide-PEG moieties that form the corona and inner layer of the vesicles were protected via formation of a reversible Diels-Alder (DA) adduct throughout the block copolymer synthesis so as to maintain their integrity. Drug release studies demonstrated a low and sustained drug release profile in systemic conditions (pH = 7.4, [Cl(-)] = 140 mM) with a higher "burst-like" release rate being observed under late endosomal/lysosomal conditions (pH = 5.2, [Cl(-)] = 35 mM). Further, the peripheral maleimide functionalities on the vesicle corona were conjugated to thiol-functionalized folic acid (FA) (via in situ reduction of a novel bis-FA disulfide, FA-SS-FA) to form an active targeting drug delivery system. These targeting vesicles exhibited significantly higher cellular binding/uptake into and dose-dependent cytotoxicity toward cancer cells (HeLa) compared to noncancerous cells (NIH-3T3), which show high and low folic acid receptor (FR) expression, respectively. This work thus demonstrates a novel approach to polypeptide-based vesicle assembly and a promising strategy for targeted, effective CDDP anticancer drug delivery.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC07417G
Abstract: We prepared novel cryogels via facile thiol–ene reaction at low temperatures, which can selectively remove oils with excellent recyclability.
Publisher: American Chemical Society (ACS)
Date: 09-01-2020
DOI: 10.26434/CHEMRXIV.11542431.V1
Abstract: Thin film composite (TFC) membranes have attracted increasing interest to meet the demands of industrial gas separation. However, the development of high performance TFC membranes within their current configuration faces two key challenges: (i) the thickness-dependent gas permeability of polymeric materials (mainly polydimethylsiloxane (PDMS)) and (ii) the geometric restriction effect due to the limited pore accessibility of porous substrates. Here we demonstrate for the first time that the incorporation of trace (~1.8 wt%) amounts of amorphous metal-organic framework (aMOF) nanosheets into the gutter layer of TFC assemblies can simultaneously address these two limitations, with experimental evidence revealing the creation of rapid gas diffusion pathways along horizontal direction. Leveraging this strategy, we successfully fabricated a novel TFC membrane, consisting of a PDMS/aMOF gutter and an ultrathin (~54 nm) poly(ethylene glycol) top selective layer via surface-initiated atom transfer radical polymerization (ATRP). The complete TFC membrane exhibits excellent processability and the highest CO 2 permeance (1,990 GPU with a CO 2 /N 2 ideal selectivity of 39) yet observed for a TFC membrane employing a PDMS gutter layer. This study reveals an avenue for the design and fabrication of a new TFC membrane system with unprecedented gas separation performance.
Publisher: Wiley
Date: 03-04-2015
DOI: 10.1002/POLA.27628
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03281D
Abstract: Cyclodextrin-based supramolecular polyrotaxanes are for the first time used as soft nanoparticle additives for the selective layer of composite membranes. They exhibit outstanding gas transport characteristics at low additive percentages, due to the dynamic nature of the PDMS side chains.
Publisher: Springer Science and Business Media LLC
Date: 02-04-2020
DOI: 10.1038/S41467-020-15312-X
Abstract: The high toughness of natural spider-silk is attributed to their unique β-sheet secondary structures. However, the preparation of mechanically strong β-sheet rich materials remains a significant challenge due to challenges involved in processing the polymers roteins, and managing the assembly of the hydrophobic residues. Inspired by spider-silk, our approach effectively utilizes the superior mechanical toughness and stability afforded by localised β-sheet domains within an amorphous network. Using a grafting-from polymerisation approach within an amorphous hydrophilic network allows for spatially controlled growth of poly(valine) and poly(valine- r -glycine) as β-sheet forming polypeptides via N-carboxyanhydride ring opening polymerisation. The resulting continuous β-sheet nanocrystal network exhibits improved compressive strength and stiffness over the initial network lacking β-sheets of up to 30 MPa (300 times greater than the initial network) and 6 MPa (100 times greater than the initial network) respectively. The network demonstrates improved resistance to strong acid, base and protein denaturants over 28 days.
Publisher: Elsevier BV
Date: 02-2019
Publisher: Wiley
Date: 14-06-2010
DOI: 10.1002/POLA.24077
Publisher: American Chemical Society (ACS)
Date: 11-07-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4SC01240B
Abstract: The formation of cross-linked polymer films, with tunable thickness, proceeds directionally from the substrate surface by controlled polymerization in the solid state.
Publisher: American Chemical Society (ACS)
Date: 21-02-2022
Abstract: A new three-dimensional (3D) printing gel is developed to construct hierarchically porous ceramics with adjustable millimeter-, micrometer-, and nanometer-scale size for application in thermal management. Not only does the gel based on supramolecular micelles exhibit excellent DIW 3D printability but also the supramolecular micelles act as templates that can precisely control the structure of micrometer-scale pores. The effect of millimeter- and μmicrometer-scale size on properties of porous ceramics is investigated in detail. The 3D-printed ceramic foam with millimeter-scale pores and smaller micrometer-scale pores shows better thermal insulation and lower compressive strength. For the thermal insulation, the local temperature of a chip exposed to contact heat is only 34.2 °C in the presence of a printed foam cap with a pore size of 41.5 μm, while the local temperature is 54.8 °C in the absence of the printed foam cap. The study provides a new method to construct hierarchically porous alumina ceramics with precisely tunable size, avoiding the issues of subtractive manufacturing and opening up new applications in portable devices or consumer electronics.
Publisher: Wiley
Date: 28-04-2006
DOI: 10.1002/POLA.21488
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2CC37319J
Abstract: A simple and straightforward method of self-assembling grafted copolymers was developed to fabricate cross-linked polymer vesicles, which could conjugate anticancer drug cis-platinum and possess the capability of a high drug loading content, and a steady release rate.
Start Date: 2018
End Date: 2019
Funder: Melbourne Research, University of Melbourne
View Funded ActivityStart Date: 2018
End Date: 2022
Funder: Australian Research Council
View Funded ActivityStart Date: 2011
End Date: 2014
Funder: Australian Research Council
View Funded ActivityStart Date: 10-2018
End Date: 09-2023
Amount: $732,125.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2011
End Date: 02-2016
Amount: $835,200.00
Funder: Australian Research Council
View Funded Activity