A novel synthesis of side-chain electro-optic polyimides with high azo chromophore density

Autor:	Yuquan Shen, Ji-Ben Meng, Ping Chen, Hong Ma, Yong-Mei Wang
Rok vydání:	1998
Předmět:	chemistry.chemical_classification Polymers and Plastics Chemistry Organic Chemistry General Physics and Astronomy Polymer Chromophore Solvent chemistry.chemical_compound Azobenzene Polymer chemistry Materials Chemistry Side chain Thermal stability Spectroscopy Prepolymer
Zdroj:	European Polymer Journal. 34:1125-1132
ISSN:	0014-3057
DOI:	10.1016/s0014-3057(98)80000-1
Popis:	A series of electro-optic polyimides containing azobenzene side-chain have been synthesized and characterized. The key step in the synthesis was the diazonium coupling to aniline-containing poly(amic acid) in nonaqueous solvent. The chromophore density was determined by 1HNMR spectroscopy. High chromophore density up to 100% by mole has been obtained due to the utilizing of the novel synthetic method, resulting in a large electro-optic coefficient. These polymers show high thermal stability monitored by TGA and UV/Vis measurements. The prepolymer poly(amic acid)s are soluble in many organic solvents and have good film forming property.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7cd3c76b703857be4fa4663659ce5b36 https://doi.org/10.1016/s0014-3057(98)80000-1 Zobrazit plný text záznamu Full Text from ScienceDirect