Some aromatic poly(amid-hydrazidesl have been synthesized b) solution polycondensation at low temperature of aromatic hydrazides x~ith aroyl dichlorides. By heating these polymers at temperatures near 300, dehydrocyclizalion occurs to give polymers containing the oxadiazole ring in the main chain. T
Comparative study of the thermal properties of related aromatic polyhydrazides and poly(1,3,4-oxadiazole)s
β Scribed by Shigen Zhu; Burkhard Schulz; Maria Bruma; Ludwig Brehmer
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 583 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1042-7147
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## Abstract New polyhydrazides and poly(amidehydrazide)s bearing redoxβactive carbazole and triphenylamine units were prepared. The resulting poly(1,3,4βoxdiazole)s and poly(amideβ1,3,4βoxadiazole)s had high glassβtransition temperatures (288β330βΒ°C) and high thermal stability. The dilute solutions
A novel soluble conjugated polymer, poly[(2,5-diphenylene-1,3,4-oxadiazole)-4,4Π-vinylene] (O-PPV), containing an electron-transporting group on the main chain of PPV, was synthesized according to HORNER mechanism. The oligo-polymer with M w Ο 1000 and T d Ο 270Β°C is soluble in chloroform and tetrah