New hyperbranched polyaryleneethynylene containing azobenzenechromophore moieties in the main chain: facile synthesis, large optical nonlinearity and high thermal stability

2010 ◽  
Vol 1 (1) ◽  
pp. 78-81 ◽  
Author(s):  
Zhong'an Li ◽  
Wenbo Wu ◽  
Cheng Ye ◽  
Jingui Qin ◽  
Zhen Li
Keyword(s):  
Thermal Stability ◽  
Main Chain ◽  
Optical Nonlinearity ◽  
High Thermal Stability ◽  
Facile Synthesis

Novel polyhydrazides and polyoxadiazoles based on 1,3,4‐thiadiazole moiety in the main chain with high thermal stability, good solubility, and notable antimicrobial activity

2019 ◽  
Vol 136 (28) ◽  
pp. 47770 ◽  
Author(s):  
Kamal I. Aly ◽  
Osama Younis ◽  
Nayef S. Al‐Muaikel ◽  
Ahmed A. Atalla ◽  
Abu‐Bakr A. A. M. El‐Adasy ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Antimicrobial Activity ◽  
Main Chain ◽  
High Thermal Stability ◽  
Good Solubility

Synthesis of Main-Chain Polyimides Containing Azoaryl and their Third-Order NLO Properties

2011 ◽  
Vol 306-307 ◽  
pp. 215-219
Author(s):  
Jie Ping Shi ◽  
Li Wei ◽  
Hong Wen Hu ◽  
Ting Chao He ◽  
Xiao Qiang Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Main Chain ◽  
High Thermal Stability ◽  
Azo Compounds ◽  
Third Order ◽  
Nlo Properties ◽  
The Third ◽  
Good Solubility ◽  
Azo Group ◽  
532 Nm

A series of main-chain polyimides containing azo aryl with different substituted groups have been synthesized by a condensation of corresponding N,N-dichloroethylaminoaryl azo compounds with 4,4’-(hexafluoroisopropylidene) diphthalic bis-imide in an alkaline DMF solution, which have high thermal stability and good solubility in organic solvents. The third-order NLO measurements made with Z-scan technique at 532 nm indicate that the polyimides containing p-nitrophenylazo and nitrobenzothiazole azo group (P2 and P3) have larger third-order nonlinear absorption coefficient (ß) and the nonlinear refractive coefficient (n2).

Electro‐optic side‐chain polyimide system with large optical nonlinearity and high thermal stability

1994 ◽  
Vol 64 (17) ◽  
pp. 2197-2199 ◽  
Author(s):  
Wataru Sotoyama ◽  
Satoshi Tatsuura ◽  
Tetsuzo Yoshimura
Keyword(s):  
Thermal Stability ◽  
Optical Nonlinearity ◽  
High Thermal Stability ◽  
Side Chain ◽  
Electro Optic

Main-chain azo polyaramides with high thermal stability and liquid crystal properties

2008 ◽  
Vol 16 (4) ◽  
pp. 455-460 ◽  
Author(s):  
Junlong Yao ◽  
Yanjiao You ◽  
Youan Lei ◽  
Lijie Dong ◽  
Chuanxi Xiong ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Liquid Crystal ◽  
Main Chain ◽  
High Thermal Stability ◽  
Crystal Properties

Facile synthesis of highly branched poly(acrylonitrile-co-vinyl acetate)s with low viscosity and high thermal stability via radical aqueous solution polymerization

2014 ◽  
Vol 5 (10) ◽  
pp. 3326-3334 ◽  
Author(s):  
Wenyan Huang ◽  
Chang Liu ◽  
Hongjun Yang ◽  
Xiaoqiang Xue ◽  
Bibiao Jiang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Chain Transfer ◽  
High Thermal Stability ◽  
Solution Polymerization ◽  
Facile Synthesis ◽  
Low Viscosity ◽  
Aqueous Solution Polymerization ◽  
Chain Transfer Monomer ◽  
Poly Acrylonitrile

Branched P(AN-co-VAc)s were obtained via radical polymerization using a new chain transfer monomer of 2-(3-mercaptopropionyloxy) ethyl methacrylate.

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