Premium
Fluorinated Hyperbranched Polyimide for Optical Waveguides
Author(s) -
Gao Hong,
Wang Dong,
Guan Shaowei,
Jiang Wei,
Jiang Zhenhua,
Gao Weinan,
Zhang Daming
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600670
Subject(s) - polyimide , monomer , materials science , glass transition , reagent , polymer , polymer chemistry , birefringence , trifluoromethyl , benzene , molecule , chemical engineering , layer (electronics) , composite material , organic chemistry , optics , chemistry , physics , alkyl , engineering
A novel fluorinated hyperbranched polyimide (HBPI) is synthesized by using a new triamine monomer, 1,3,5‐tris(2‐trifluoromethyl‐4‐aminophenoxy)benzene (TFAPOB) (A 3 ), as a ‘core’ molecule, 4,4‐(hexafluoroisopropylidene)diphthalic anhydride (6FDA) as a B 2 monomer, and 3,5‐ditrifuoromethylphenyl as an endcapping reagent. The polymer shows a glass transition temperature of 232 °C and a temperature of 10% weight loss at 535 °C. The HBPI presents a birefringence as low as 0.002 at 650 nm. Near‐IR results indicate that HBPI exhibits desirable properties for low loss optical waveguide applications.