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Synthesis and Characterization of alternating polymers incorporating boron-chelated heterochrysene units
The novel boron-chelated π-conjugated polymers named as BF2-poly and BPh2-poly were synthesized by a feasible condensation-chelation strategy. First, conjugated polymers bearing Boc group were prepared by using palladium-catalyzed Suzuki-Miyaura coupling reaction. Then, conjugated polymers (poly-1) were obtained with high efficient by removing the Boc group from Boc-poly. Last, boron trifluorid...
http://www.polymer.cnt//ss/hailei/publicationsshow_13506.html |
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Shish-Kebab crystallites initiated by shear fracture in bulk polymers
The study of shear-induced polymer crystallization has so far overlooked heterogeneous crystal nucleation of shish-kebab crystallites, which can be initiated by the stretched local polymer chains in the sporadic events of shear fracture upon sudden startup or cessation of polymer shear flow or in the memory of these events. We performed dynamic Monte Carlo simulations of a binary blend of short an...
http://www.polymer.cnt//ss/nieyijing/publicationsshow_13437.html |
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【68 Scientia Sinica Chimica】 The carbonization of polymers: Basic problems and applications
The key issue to promote the carbonization of polymeric materials is how to adjust the degradation products of polymers and control the carbonization of these products. The carbonization of polymers supplies a new strategy to prepare polymer materials with enhanced flame retardancy and provides a new way to convert waste polymeric materials into nanocarbon materials. This short review focused on t...
http://www.polymer.cnt//ss/gongjiang_hust/publicationsshow_13294.html |
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【70 Chem 】Conjugated microporous polymers with rigid backbones for organic solvent nanofiltration
It is very challenging to develop highly permeable and selective polymer membranes for organic solvent nanofiltration. Recently in Nature Chemistry, Liang et al. reported conjugated microporous polymer membranes with all-rigid conjugated systems through a surface-initiated polymerization strategy; the membranes exhibited high resistance to organic solvents and high permeance for hexane and metha...
http://www.polymer.cnt//ss/gongjiang_hust/publicationsshow_13292.html |
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Polymers of Intrinsic Microporosity (PIMs) Gas Separation Membranes: A mini Review
Polymers of Intrinsic Microporosity (PIMs) are broadly recognized as a potential next generation membrane material for gas separations due to their ultra-permeable characteristics. This mini review aims to provide an overview of these materials and capture its very essence, from chemistry to applications. PIMs-based gas separation membranes are divided into three main categories, i.e., neat PIMs, ...
http://www.polymer.cnt//ss/macanghai/publicationsshow_12579.html |
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Epoxy-functionalized star-shaped polymers as novel tougheners for epoxy resin
A novel epoxy resin toughener based on star-shaped copolymer of butyl acrylate (BA) and glycidyl methacrylate (GMA) [poly (BA-co-GMA)] with low viscosity was developed. The star polymers were synthesized by initiators for continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) using tri, tetra and hexa-functional initiators. The branching parameters of star poly (BA-co...
http://www.polymer.cnt//ss/renqiang/publicationsshow_12386.html |
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[Polymers] A multiple shape memory hydrogel induced by reversible physical interactions
A novel multiple shape memory hydrogel is fabricated based on two reversible physical interactions. The multiple shape memory property is endowed by a simple treatment of soaking in
NaOH or NaCl solutions to form chitosan microcrystal or chain-entanglement crosslinks as temporary junctions.
http://www.polymer.cnt//ss/chentaogroup/publicationsshow_12139.html |
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[Polymers] Coumarin- and Carboxyl-Functionalized Supramolecular Polybenzoxazines Form Miscible Blends with Polyvinylpyrrolidone
In this study, we synthesized a novel multifunctional benzoxazine monomer (Coumarin-COOH BZ), possessing both coumarin and COOH groups, through the reaction of 4-methyl-7-hydroxycoumarin, 4-aminobenzoic acid, and paraformaldehyde in 1,4-dioxane, with the structure confirmed using 1H and 13C nuclear magnetic resonance and Fourier transform infrared (FTIR) spectroscopy. Differential scanning calor...
http://www.polymer.cnt//ss/chentaogroup/publicationsshow_12138.html |
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A New Strategy To Access Polymers with Aggregation-Induced Emission Characteristics
A highly efficient
strategy for synthesizing the first biocompatible polyesters with AIE
characteristics has been established via immortal ring-opening polymerizations
of cyclic esters bearing nonluminophores. In the process, the large excess
hydroxyl-modified AIE active compound, acting as the chain transfer agent,
attaches to the active rare-earth metal catalyst via the rapid-reversible
...
http://www.polymer.cnt//ss/dongmeicui/publicationsshow_11972.html |
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A General Direct C-H Coupling Method for Preparing Conducting Polymers with High Regioregularity
The Pd-catalysed oxidative C–H/C–H coupling reaction of 3-octylesterthiophene has been used for the first time to synthesize regioregular, head-to-tail coupled poly(3-esterthiophene).
http://www.polymer.cnt//ss/yangxinlin/publicationsshow_11854.html |
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