ORCID Profile
0000-0002-3251-2372
Current Organisation
Anhui University
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Publisher: American Chemical Society (ACS)
Date: 17-10-2019
DOI: 10.1021/JACS.9B08927
Abstract: Artificial molecular machines (AMMs) built from mechanically interlocked molecules (MIMs) can use energy ratchets to control the unidirectional motion of their component parts. These energy ratchets are operated by the alteration of kinetic barriers and thermodynamic wells, which are, in turn, determined by the switching on and off of noncovalent interactions. Previously, we have developed artificial molecular pumps (AMPs) capable of pumping rings consecutively onto a collecting chain as part of a molecular dumbbell, leading to the formation of rotaxanes. Here, we report a molecular dual pump (MDP) consisting of two in idual AMPs linked in a head-to-tail fashion, wherein a single ring is pumped, in a linear manner, on and off a dumbbell involving a [2]rotaxane intermediate by exploiting the redox properties of the two pumps. This MDP, defined by the finely tuned noncovalent interactions and fueled by either chemicals or electricity, utilizes an energy ratchet mechanism to capture a ring and subsequently release it back into solution. The unidirectional motion and the resulting
Publisher: American Chemical Society (ACS)
Date: 30-03-2020
DOI: 10.1021/JACS.0C01989
Publisher: American Chemical Society (ACS)
Date: 26-11-2018
DOI: 10.1021/JACS.8B10526
Abstract: Designing macrocycles with appropriate molecular recognition features that allow for the integration of suitable external stimuli to control host-guest processes is a challenging endeavor which enables molecular containers to solubilize, stabilize, and separate chemical entities in an externally controllable manner. Herein, we introduce photo- and thermal-responsive elements into a semi-rigid tetracationic cyclophane, OPVEx
Publisher: American Chemical Society (ACS)
Date: 09-08-2018
DOI: 10.1021/JACS.8B06609
Abstract: A class of metal-organic frameworks (MOFs)-namely CD-MOFs-obtained from natural products has been grown in an epitaxial fashion as films on the surfaces of glass substrates, which are modified with self-assembled monolayers (SAMs) of γ-cyclodextrin (γ-CD) molecules. The SAMs are created by host-guest complexation of γ-CD molecules with surface-functionalized pyrene units. The CD-MOF films have continuous polycrystalline morphology with a structurally out-of-plane ( c-axial) orientation, covering an area of several square millimeters, with a thickness of ∼2 μm. Furthermore, this versatile host-guest strategy has been applied successfully in the growth of CD-MOFs as the shell on the curved surface of microparticles as well as in the integration of CD-MOF films into electrochemical devices for sensing carbon dioxide. In striking contrast to the control devices prepared from CD-MOF crystalline powders, these CD-MOF film-based devices display an enhancement in proton conductance of up to 300-fold. In addition, the CD-MOF film-based device exhibits more rapid and highly reversible CO
Publisher: American Chemical Society (ACS)
Date: 19-09-2019
DOI: 10.1021/JACS.9B08926
Abstract: Organic radicals are of importance in developing smart materials that have paramagnetic and/or near-infrared optical properties. Their practical applications, however, are limited by the labile nature of the radicals. Here, we demonstrate that by using a tetracationic cyclophane, namely, cyclobis(4,4'-(1,4-phenylene)bispyridine-
Publisher: American Chemical Society (ACS)
Date: 03-06-2021
DOI: 10.1021/JACS.1C03277
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9SC04860J
Abstract: Although host–guest pairing interactions between bisradical dicationic cyclobis(paraquat- p -phenylene) ( BB2(˙+) ) and the bipyridinium radical cation ( BIPY˙+ ) have been studied extensively, host molecules other than BB2(˙+) are few and far between.
Publisher: American Chemical Society (ACS)
Date: 12-11-2020
DOI: 10.1021/JACS.0C09896
Publisher: American Chemical Society (ACS)
Date: 31-07-2020
DOI: 10.1021/JACS.0C06663
Publisher: American Association for the Advancement of Science (AAAS)
Date: 12-06-2020
Abstract: Rotaxanes consist of molecular rings threaded on a central axle. Most approaches to their synthesis have focused on introducing a single ring per axle. Qiu et al. now report a systematic approach to threading up to 10 adjacent rings consecutively. The axle's end groups were constructed to attract free-floating rings when reduced and then to push those rings toward the center upon oxidation. Products of each successive reduction-oxidation cycle were characterized by nuclear magnetic resonance spectroscopy and mass spectrometry. Science , this issue p. 1247
Publisher: American Chemical Society (ACS)
Date: 14-01-2020
DOI: 10.1021/JACS.9B12527
Abstract: A class of γ-cyclodextrin-containing hybrid frameworks (CD-HFs) has been synthesized, employing γ-cyclodextrin (γ-CD) as the primary building blocks, along with 4-methoxysalicylate (4-MS
Publisher: American Chemical Society (ACS)
Date: 28-05-2020
DOI: 10.1021/JACS.0C04029
Publisher: Springer Science and Business Media LLC
Date: 10-12-2018
DOI: 10.1038/S41467-018-07673-1
Abstract: The host-guest recognition between two macrocycles to form hierarchical non-intertwined ring-in-ring assemblies remains an interesting and challenging target in noncovalent synthesis. Herein, we report the design and characterization of a box-in-box assembly on the basis of host-guest radical-pairing interactions between two rigid diradical dicationic cyclophanes. One striking feature of the box-in-box complex is its ability to host various 1,4-disubstituted benzene derivatives inside as a third component in the cavity of the smaller of the two diradical dicationic cyclophanes to produce hierarchical Russian doll like assemblies. These results highlight the utility of matching the dimensions of two different cyclophanes as an efficient approach for developing new hybrid supramolecular assemblies with radical-paired ring-in-ring complexes and smaller neutral guest molecules.
Publisher: American Chemical Society (ACS)
Date: 04-09-2020
DOI: 10.1021/JACS.0C07745
Publisher: American Chemical Society (ACS)
Date: 10-07-2020
Publisher: American Chemical Society (ACS)
Date: 28-09-2018
DOI: 10.1021/JACS.8B08555
Abstract: Along with the advent of supramolecular chemistry, research on fullerene receptors based on noncovalent bonding interactions has attracted a lot of attention. Here, we present the design and synthesis of a cationic molecular cage: a cyclophane composed of two tetraphenylporphyrins, bridged face-to-face by four viologen units in a rhomboid prismatic manner. The large cavity inside the cage, as well as the favorable donor-acceptor interactions between the porphyrin panels and the fullerene guests, enables the cage to be an excellent fullerene receptor. The 1:1 host-guest complexes formed between the cage and both C
Publisher: American Chemical Society (ACS)
Date: 27-06-2018
DOI: 10.1021/JACS.8B05322
Abstract: Herein, we report an unprecedented mixed-valence crystal superstructure that consists of a 2:1 host-guest complex [MV⊂(CBPQT)
No related grants have been discovered for Dengke Shen.