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Poly(aryl ether)s containing o-terphenyl subunits. III. Random copoly(ether imide)s

✍ Scribed by Timothy P. Bender; Sean M. MacKinnon; Zhi Yuan Wang

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 156 KB
Volume: 38
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(20000215)38:4<758::aid-pola11>3.0.co;2-m

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✦ Synopsis

The synthesis of a new diamine monomer, N-n-butyl 3,12-diamino-5,6,9,10tetrahydro[5]helicene-7,8-dicarboxylic imide (4), that contains a helically locked, Ushaped 4Ј,4Љ-o-terphenyl moiety is described. The monomer was polymerized with 3,3Ј,4,4Ј-oxydiphthalic dianhydride and 2,2-bis[4-(4-aminophenoxy)phenyl]propane to form a series of copoly(ether imide)s (5a-e). The incorporation of 4 into the poly(ether imide)s varied the glass-transition temperature of the copolymers of which it was a part. There was a tendency to form macrocyclic materials at higher molar percentages of 4 during polymerization. The fluorescence of all the copoly(ether imide)s gradually decreased as the content derived from monomer 4 increased in the polymer.

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