Temporal Stability of Azo Secondorder Nonlinear Optical Chromophores Linked with Perfluorocyclopentenyl Moiety

Abstract

The temporal stability of azo second-order nonlinear optical chromophores linked with a perfluorocyclopentenyl moiety doped in polymers was examined. The retention of second-order nonlinear optical coefficient (d₃₃) of 1, 2-bis [4- [4- [N-ethyl-N- (2-hydroxyethyl) amino] phenylazo] phenylthio] perfluorocyclopentene doped in poly (methyl methacrylate) after 530 h at 50°C was 5%. That of 1, 2-bis [4- (2, 4-diaminophenylazo) phenylthio] perfluorocyclopentene doped in poly (methyl methacrylate-co-methacrylic acid) was improved to 45% by the amido formation between azo dye and polymer matrix.