Itaconate copolymer exhibiting second-order nonlinear optical properties

摘要

A side-chain type second-order nonlinear optical polymer compound having a repeating unit as represented in general structure (I), -(-MO-)m--(-ITCN-NLO-)n-, wherein the sum of m and n is from 5 to 10000 and m and n satisfy m/(m+n)=from 0.05 to 0.95; ITCN-NLO is <IMAGE> X is not present, or represents alkylene having from 1 to 6 carbon atoms or aromatic hydrocarbon having from 6 to 12 carbon atoms; Y is a bonding group selected from the group consisting from ether, ester, amide, alkylamino having from 1 to 5 carbon atoms, carbamate and sulfone; NLO is a general second-order nonlinear optical chemical group in which a conjugated aromatic ring can be unsubstituted or substituted by an electron-donor and/or electron-acceptor; and MO is any polymerizable monomer copolymerizable with ITCN-NLO, and a nonlinear optical material prepared with the same arc disclosed. The side-chain type polymer compound of the present invention have very high second-order nonlinear optical properties with superior thermal resistance, transparency and processability for thin film formation.