ORCID Profile
0000-0003-0579-1983
Current Organisations
University of South Australia - Mawson Lakes Campus
,
University of South Australia
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 04-2013
Publisher: Elsevier BV
Date: 05-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CP44451A
Abstract: We report the influence of zinc oxide (ZnO) seed layers on the performance of ZnO-based memristive devices fabricated using an electrodeposition approach. The memristive element is based on a sandwich structure using Ag and Pt electrodes. The ZnO seed layer is employed to tune the morphology of the electrodeposited ZnO films in order to increase the grain boundary density as well as construct highly ordered arrangements of grain boundaries. Additionally, the seed layer also assists in optimizing the concentration of oxygen vacancies in the films. The fabricated devices exhibit memristive switching behaviour with symmetrical and asymmetrical hysteresis loops in the absence and presence of ZnO seed layers, respectively. A modest concentration of oxygen vacancy in electrodeposited ZnO films as well as an increase in the ordered arrangement of grain boundaries leads to higher switching ratios in Ag/ZnO/Pt devices.
Publisher: Wiley
Date: 13-04-2015
Publisher: American Chemical Society (ACS)
Date: 24-04-2013
DOI: 10.1021/AM400671N
Publisher: Wiley
Date: 17-09-2008
Publisher: Elsevier BV
Date: 05-2012
Publisher: Elsevier BV
Date: 11-2012
Publisher: Wiley
Date: 16-07-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B912324E
Publisher: American Chemical Society (ACS)
Date: 08-10-2012
DOI: 10.1021/CM302899V
Publisher: Wiley
Date: 09-07-2008
Publisher: Elsevier BV
Date: 06-2020
Publisher: Wiley
Date: 08-12-2016
Publisher: Elsevier BV
Date: 2024
Publisher: Elsevier BV
Date: 12-2022
Publisher: American Chemical Society (ACS)
Date: 11-12-2019
Publisher: Springer Science and Business Media LLC
Date: 04-11-2020
DOI: 10.1038/S42004-020-00404-Y
Abstract: Conducting polymers display a range of interesting properties, from electrical conduction to tunable optical absorption and mechanical flexibility, to name but a few. Their properties arise from positive charges (carbocations) on their conjugated backbone that are stabilised by counterions doped in the polymer matrix. In this research we report hydrolysis of these carbocations when poly(3,4-ethylenedioxy thiophene) is exposed to 1 mM aqueous salt solutions. Remarkably, two classes of anion interactions are revealed anions that oxidise PEDOT via a doping process, and those that facilitate the S N 1 hydrolysis of the carbocation to create hydroxylated PEDOT. A pKa of 6.4 for the conjugate acid of the anion approximately marks the transition between chemical oxidation and hydrolysis. PEDOT can be cycled between hydrolysis and oxidation by alternating exposure to different salt solutions. This has ramifications for using doped conducting polymers in aqueous environments (such as sensing, energy storage and biomedical devices).
Publisher: Wiley
Date: 19-08-2011
Publisher: Elsevier BV
Date: 08-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32281A
Publisher: Wiley
Date: 25-06-2018
Publisher: Elsevier BV
Date: 10-2011
Publisher: Brill
Date: 2006
Publisher: Elsevier BV
Date: 2013
Publisher: Wiley
Date: 18-03-2021
DOI: 10.1002/POL.20210095
Publisher: Elsevier BV
Date: 04-2012
Publisher: Wiley
Date: 28-03-2017
Publisher: Springer Science and Business Media LLC
Date: 21-11-2019
DOI: 10.1186/S42833-019-0001-7
Abstract: Ions are present throughout our environment—from biological systems to agriculture and beyond. Many important processes and mechanisms are driven by their presence and their relative concentration. In order to study, understand and/or control these, it is important to know what ions are present and in what concentration—highlighting the importance of ion sensing. Materials that show specific ion interaction with a commensurate change in measurable properties are the key components of ion sensing. One such type are conducting polymers. Conducting polymers are referred to as ‘active’ because they show observable changes in their electrical and optical (and other) properties in response to changing levels of doping with ions. For ex le, p-type conducting polymers such as poly(3,4-ethylenedioxythiophene) and polypyrrole, can transition from semi-conducting to metallic in response to increasing levels of anions inserted into their structure. Under certain circumstances, conducting polymers also interact with cations—showing their utility in sensing. Herein, recent advances in conducting polymers will be reviewed in the context of sensing ions. The main scope of this review is to critically evaluate our current understanding of ion interactions with conducting polymers and explore how these novel materials can contribute to improving our ion-sensing capabilities.
Publisher: American Physical Society (APS)
Date: 09-06-2020
Publisher: Wiley
Date: 24-03-2018
Publisher: American Chemical Society (ACS)
Date: 04-10-2018
Publisher: Springer Science and Business Media LLC
Date: 25-09-2017
DOI: 10.1007/S00216-017-0639-5
Abstract: Amylose, one of the components of starch, is a glucose polymer consisting largely of long, linear chains with a few long-chain branch points. The chain-length (molecular weight) distribution (CLD) of the component chains of amylose can provide information on amylose biosynthesis-structure-property relations, as has been done previously by fitting amylopectin CLDs to a model with physically meaningful parameters. Due to the presence of long chains, the CLD of amylose can currently best be obtained by size-exclusion chromatography, a technique that suffers from band-broadening effects which alter the observed distribution. The features of the multiple regions present in amylose chain-length distributions are also difficult to resolve, an issue that combines with band broadening to compound the difficulty of analysis and subsequent parameterization of the structural characteristics of amylose. A new method is presented to fit these distributions with biologically meaningful parameters in a way that accounts for band broadening. This is achieved by assuming that band broadening takes the form of a simple Gaussian over a relatively small region and that chain stoppage is a random process independent of the length of the substrate chain over the same region these assumptions are relatively weak and expected to be frequently applicable. The method provides inbuilt consistency tests for its applicability to a given data set and, in cases where it is applicable, allows for the first nonempirical parameterization of amylose biosynthesis-structure-property relations from CLDs by using parameters directly linked to the activities of the enzymes responsible for chain growth and chain stoppage. Graphical abstract Model calculation illustrating the method described and showing the ision between the three characteristic regions of a typical amylose chain-length distribution.
Publisher: Elsevier
Date: 2019
Publisher: American Chemical Society (ACS)
Date: 15-03-2017
Publisher: American Chemical Society (ACS)
Date: 02-04-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8MH01302K
Abstract: Large-area freestanding gold nanomembranes with nanoholes are created, enabling their property study without substrate effect and emerging applications.
Publisher: Wiley
Date: 13-08-2013
Publisher: Elsevier BV
Date: 07-2023
Publisher: Wiley
Date: 13-08-2009
Publisher: IOP Publishing
Date: 10-02-2015
Publisher: Wiley
Date: 28-08-2019
Publisher: American Chemical Society (ACS)
Date: 10-12-2014
DOI: 10.1021/AM404570A
Publisher: Wiley
Date: 06-2023
Abstract: Smart materials that are energy efficient and take up less space are crucial in the development of new technologies. Electrochromic polymers (ECPs) are one such class of materials that actively change their optical behavior in both visible and infrared parts of the electromagnetic spectrum. They show promise in a wide range of applications, from active camouflage to smart displays/windows. The full capabilities of ECPs are still yet to be explored, for while their electrochromic properties are well established, their Infrared (IR) modulation is less reported on. This study addresses the potential of ECPs in active IR modulating devices by optimization of Vapor Phase Polymerized poly(3,4‐ethylenedioxythiophene) (PEDOT) thin films via the substitution of its dopant anion. Dynamic ranges denoting emissivity changes between reduced and oxidized states of PEDOT are found across dopants of tosylate, bromide, sulfate, chloride, perchlorate, and nitrate. Relative to the emissivity of reduced (neutral) PEDOT, a range of ±15% is achieved from the doped PEDOT films, and a maximum dynamic range of 0.11 across a 34% change is recorded for PEDOT doped with perchlorate.
Location: Australia
Location: Poland
No related grants have been discovered for Kamil Zuber.