A novel polycarbonate for high temperature electro-optics via azo bisphenol amines accessed by Ullmann coupling

Autor:	Clark H. Cummins, S. Suresh, Mark A. Chartier, Robert J. Gulotty, Stephen E. Bales, Dennis W. Smith, M. Inbasekaran
Rok vydání:	2003
Předmět:	Azo compound Polymers and Plastics Bisphenol Organic Chemistry Fluorene chemistry.chemical_compound Aniline chemistry visual_art Polymer chemistry Materials Chemistry Trifluoroacetic acid visual_art.visual_art_medium Organic chemistry Thermal stability Phosgene Polycarbonate
Zdroj:	Polymer. 44:5111-5117
ISSN:	0032-3861
DOI:	10.1016/s0032-3861(03)00529-9
Popis:	Ullmann coupling of benzyl ether protected 4-iodophenol with 4-nitrophenylazo aniline followed by deprotection in trifluoroacetic acid affords novel 4′-(4-nitrophenylazo)-N,N-bis(4-hydroxyphenyl)aniline. Co-condensation of this azo bisphenol and 9,9′-bis(4-hydroxyphenyl)fluorene (BHPF) with phosgene gave high molecular weight polycarbonate with and high thermal stability. The polymer was soluble in common organic solvents and high quality films were prepared and subjected to poling and electro-optic (EO) analysis. The copolymer exhibited a r33 value of 3.7 pm/V. Synthesis, characterization, and thermal properties are described.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de68515f1969ae242f778324db63929c https://doi.org/10.1016/s0032-3861(03)00529-9 Zobrazit plný text záznamu Full Text from ScienceDirect