نتایج جستجو برای: poly 1 4 phenylene ether ether sulfone

تعداد نتایج: 3433402  

Journal: :Advanced electronic materials 2022

High energy density, high temperature, and low loss dielectric polymers have drawn increasing attention in research owing to their potential applications power electronic pulsed devices. In this study, a new class of organo-soluble dipolar glass (DGPs) are synthesized via polycondensation post-functionalization poly(aryl ether)s (PAEs) based on phenolphthalin. Due the nonplanar backbone structu...

Journal: :Polymer International 2021

Poly(ether ether ketone) (PEEK) is a high-performance thermoplastic with distinctive combination of corrosion resistance, thermo-oxidative stability and outstanding physical mechanical properties at high temperatures. A pertinent step forward in the development this has been inclusion electrically conductive fillers to expand its functionality. In review an overview research on PEEK composites ...

2017
Andrzej Rajca Hua Wang Suchada Rajca

The asymmetric synthesis of a chiral, nonracemic π-conjugated system with D2 point group of symmetry, dodecaphenylene 4 is described. In the key step, (−)-sparteineand Cu(II)-mediated oxidation of 2,2′-dilithio-1,1′-biaryls in ether gives the corresponding dimers, tetra-o-phenylenes, in 80% isolated yields and 50–60% ee’s. X-Ray crystallography confi rms the structure of rac-4 and its molecular...

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