Journal of Applied Polymer Science, Vol.128, No.5, 3405-3410, 2013
Synthesis and properties of novel hyperbranched polyimides end-capped with metallophthalocyanines
A fluorinated hyperbranched polyimide (HBPI) is synthesized by using a triamine monomer, 1,3,5-tris(2-trifluoromethyl-4-aminophenoxy)benzene (TFAPOB) (B3), as a core molecule, 4,4-oxydiphthalic anhydride (ODPA) as a A2 monomer, and 4-aminophthalonitrile as an end-capping reagent. After that, a series of novel fluorinated hyperbranched polyimides end-capped with metallophthalocyanines were prepared by the reactions of dicyanophenyl end-capped hyperbranched polyimide with excessive amounts of 1,2-dicyanobenzene and the corresponding metal salt in quinoline. The resulting polyimides containing metallophthalocyanine unites shows optical absorption in the visible region. The absorption bands of the polymers in chloroform solution are in the range of 665701 nm. These polyimides show glass transition temperatures between 216 and 225 degrees C, and the 5 wt % weight loss temperature of the polymers varied from 440 to 543 degrees C under nitrogen. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013