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Polymer Chemistry 2015: Real Time Quantification of the Chemical Cross-Link Density of a Hydrogel by in situ UV-vis Spectroscopy
In this paper, we prepare a hydrogel in a green way via the redox reaction between phenol groups and EosinY by visible light irradiation. Eosin Y shows significant absorption at 515 nm while the reduced product does not. A series of control experiments show that almost 100% of the consumed Eosin Y is reacted with phenol groups to form cross-link points. On the basis of the two results, the chemica...
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8343.html |
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Temperature dependence of creep and recovery behaviours of polymer composites filled with chemically reduced graphene oxide
Resistance to time-dependent plastic deformation of polymer composite materials is a crucial require-
ment in their application for long-term durability and reliability. Herein, creep and recovery behaviors
of polystyrene (PS) composites filled with various loadings of chemically reduced graphene oxide (CRGO)
were investigated at different environment temperatures. As expected, incor...
http://www.polymer.cnt//ss/tanglongcheng/publicationsshow_8303.html |
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Extracellular Electron Transfer across Bacterial Cell Membranes via a Cytocompatible Redox-Active Polymer
A redox-active phospholipid polymer with a phospholipidmimicking structure (2-methacryloyloxyethyl phosphorylcholine; MPC) was synthesized to construct a biocompatible electron mediator between bacteria and an electrode. In this study, a copolymer of MPC and vinylferrocene [VF; poly(MPC-co-VF)] (PMF) is synthesized. When PMF is added to cultures of the bacterial spe...
http://www.polymer.cnt//ss/xiaojielin/publicationsshow_8281.html |
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The effect of the encapsulation of bacteria in redox phospholipid polymer hydrogels on electron transfer efficiency in living cell-based devices
Development of living cell-based devices holds great promise in many biomedical and industrial applications. To increase our understanding of the process, we investigated the biological and electrochemical properties of a redox phospholipid polymer hydrogel containing an electron-generating bacteria (Shewanella oneidensis MR-1). A water-soluble and amphiphilic phospholipid polymer...
http://www.polymer.cnt//ss/xiaojielin/publicationsshow_8280.html |
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Amphibious polymer-functionalized CdTe quantum dots: synthesis, thermoresponsive self-assembly, and photoluminescent properties
A straightforward strategy is presented to functionalize aqueous-phase synthesized CdTe quantum dots (QDs) with thermo-sensitive poly(2-(dimethylamino) ethyl methacrylate) (PDMAEMA) via direct surface-initiated oxyanionic vinyl polymerization. The polymer grafting quantity can be facilely controlled in a wide range up to 95.2wt% by adjusting the weight feed ratio of monomer to pristine QDs. The po...
http://www.polymer.cnt//ss/zhouli/publicationsshow_8263.html |
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Simultaneous photoluminescence import and mechanical enhancement of polymer films using silica-hybridized quantum dots
Quantum dot (QD)-polymer nanocomposites that simultaneously possess stable photoluminescence and enhanced mechanical properties are presented for the first time based on the facile blending of the ultrasmall silica-hybridized CdTe QDs (SiO(2)-h-QDs) or 3-(trimethoxysilyl) propyl methacrylate-modified SiO(2)-h-QDs (SiO(2)-h-QD-MSMAs) with polymer. Typically, for SiO(2)-h-QD-MSMA/poly(methyl methacr...
http://www.polymer.cnt//ss/zhouli/publicationsshow_8257.html |
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Facile synthesis of stable and water-dispersible multi-hydroxy conjugated polymer nanoparticles with tunable size by dendritic crosslinking
A new strategy has been developed to synthesize, conjugated polymer (CP) nanoparticles (CPNs) with numerous surface hydroxyl groups via click chemistry between: a;CP and hyperbranched polyglycerol (HPG), in miniemulsion. Laser light scattering and TEM characterizations indicate that the synthesized CPNs have spherical shapes with uniform sizes tunable in the. range of 40-210 nm simply by adjusting...
http://www.polymer.cnt//ss/zhouli/publicationsshow_8248.html |
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One-step synthesis of versatile amine- and vinyl-capped magnetic iron oxide nanoparticles for polymer grafting, dye adsorption and catalysis
Magnetic iron oxide nanoparticles (MIONs) bearing amine and vinyl groups are fabricated straightforwardly using vinyl-based tertiary amine molecules as both alkaline source and ligands based on the coprecipitation of iron ions in aqueous solution. The as-prepared MIONs present amphiphilic performance that can be well-dispersed both in aqueous solution and common organic solvents (e.g., ethanol, di...
http://www.polymer.cnt//ss/zhouli/publicationsshow_8246.html |
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Polymer, 54, 3737-3743: Single-chain mechanics of poly(N-isopropyl-acrylamide) in the water/methanol mixed solvent
The variation of the single-chain mechanics of PNIPAM for the entire
range of the methanol molar fraction (χmethanol) (0 ~
100%) in the water/methanol mixed solvent have been studied by AFM-based single-molecule
force spectroscopy at RT. In general, the single-chain mechanics of PNIPAM
shows a reentrant variation upon the change of χmethanol from 0 to
100%. The possible mechanism for the re...
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8215.html |
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Polymer, 50, 930-935: Modeling single chain elasticity of single-stranded DNA: A comparison of three models
The
dominant models of polymers, i.e. the freely jointed chain (FJC) model, the wormlike
chain (WLC) model and the freely rotating chain (FRC) model are modified by
integrating the inherent single-molecule elasticity obtained from quantum
mechanics (QM) ab-initio calculations. The QM modified models have been
utilized to generate fitting curves for single-stranded DNA obtained in organic
solvent. ...
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8214.html |
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