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Precise synthesis of sulfur-containing polymers via cooperative dual organocatalysts with high activity
Metal-free and controlled synthesis of sulfur-containing polymer is still a big challenge in
polymer chemistry. Here, we report a metal-free, living copolymerization of carbonyl sulfide
(COS) with epoxides via the cooperative catalysis of organic Lewis pairs including bases (e.g.:
phosphazene, amidine, and guanidine) and thioureas as hydrogen-bond donors, afford welldefined poly(monothi...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14184.html |
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【Polymer】High Tg and thermostable phytic Acid?Cured polynorbornene-based polymer by a Palladium(Ⅱ) complex bearing iminophenyl oxazolinylphenylamines ligand
1
http://www.polymer.cn//ss/baichenxi/publicationsshow_14176.html |
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Metal-Free Route to Precise Synthesis of Poly(propylene oxide) and Its Blocks with High Activity
The fast and living ring-opening polymerization (ROP) of propylene oxide (PO) by metal-free catalysis is reported. By using triethyl borane (TEB) and organic Lewis bases (LBs, e.g.: phosphazene base, amidine and guanidine) as the catalysts, various alkyl alcohols can effectively initiate the ROP of PO, yielding tailor-made poly(propylene oxide)s (PPOs) with high regioregularity, predictable mole...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14175.html |
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Dual Organocatalysts for Highly Active and Selective Synthesis of Linear Poly(gamma-butyrolactone)s with High Molecular Weights
Ring-opening polymerization (ROP) of the bioderived and nonstrained γ-butyrolactone (γ-BL) is an emerging approach to produce recyclable polymers. It remains a big challenge to synthesize high molecular weight linear poly(γ-butyrolactone)s (PγBLs) in a highly active and selective manner. In this report, we developed dual organocatalysts for the ROP of γ-BL, using symmetrical (thio)ureas wit...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14173.html |
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Alternating and regioregular copolymers with high refractive index from COS and biomass-derived epoxides
This study describes the catalytic formation of alternating and regioregular copolymers from carbonyl sulfide (COS) and epoxides along with eugenol-based glycidyl ether (EGE) and guaiacol-based glycidyl ether (GGE), derived from eugenol and guaiacol, respectively. The (salen)CrCl [salen ? N,N0-bis(salicylidene) cyclohexanediimine] complex, accompanied with various organic bases, was highly activ...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14165.html |
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Self-Assembled Micellar Nanosensor toward pH with high photo-stability and its application in living cells
Based on photo-induced electron transfer, 1,8-naphthalic anhydride-based organic molecular fluorescent pHsensor
(1) was designed and synthesized. Hydrophobic, fluorescent hybrid nanosensor (1-PS35-b-PAA30) encapsulated
with the hydrophobic pH responsive fluorophore for sensing intracellular pH has been fabricated
based on the self-assembly of amphiphilic diblock copolymer PS35-b-PAA30 and 1. The a...
http://www.polymer.cn//ss/lizx/publicationsshow_14154.html |
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Readily recyclable, high-performance thermosetting materials based on a lignin-derived spiro diacetal trigger
Conventional thermosets, widely used in composites, coatings, electronic packing materials, etc., are typically made of non-sustainable fossil resources and cannot be recycled under mild conditions. Degradable thermosets are promising alternatives, while combining ready degradability and high performance is a challenge. In this paper, for the first time, a spiro diacetal structure was utilized t...
http://www.polymer.cn//ss/taoyu/publicationsshow_14128.html |
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【China Synthetic Rubber Industry】High cis-1,4-copolymerization of myrcene and butadiene with a neodymium-based catalyst
High cis-1,4-copolymerization of myrcene and butadiene with a neodymium-based catalyst
http://www.polymer.cn//ss/baichenxi/publicationsshow_14124.html |
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Sulfonated poly (aryl ether sulfone) containing 1,3,4-oxadiazole as proton exchange membranes for medium-high temperature fuel cells
Sulfonated poly (aryl ether sulfone) containing 1,3,4-oxadiazole as proton exchange membranes for medium-high temperature fuel cells
http://www.polymer.cn//ss/wzccut/publicationsshow_14093.html |
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Sulfonated poly (arylene ether ketone sulfone)/ZrP composite membranes for medium-high temperature operation of PEMFC
Sulfonated poly (arylene ether ketone sulfone)/ZrP composite membranes for medium-high temperature operation of PEMFC
http://www.polymer.cn//ss/wzccut/publicationsshow_14092.html |
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