Abstract: P-Nitroaniline and 4-amino-4'-nitrobiphenyl were reacted separately with diglycidylbisphenol A to gain multihydroxyl oligomers. The two oligomers were crosslinked with o-phthaloxyl dichloride and toluene-2,4-diisocyanate to produce corresponding cross-linking polymers. Poling and crosslinking were carried out at the same time. The crosslinking reactions were studied by FT-IR. The orientation and stability of the crosslinked poled polymers were studied by UV-Vis spectra. The crosslinked polymers based on nitro-biphenyl amine unit exhibit lower original orientation degree, but better orientational stability at 80℃.

Key words: hydoxyl-containing oligomer, nonlinear optics, crosslinked polymer, synthesis