European Polymer Journal vol:34 issue:8 pages:1069-1072
Nonlinear optical chromophores with thiophene groups incorporated in the conjugated system were synthesized. Their second-order nonlinear response was evaluated by electric-field-induced second-harmonic generation (EFISHG) measurements. Off-resonant values mu beta(0) as high as 589.10(-48) esu were obtained. Some of the D pi A (donor-accepted conjugated) systems were incorporated as side chain into MMA-chromophore functionalised methacrylate copolymers in various concentrations. The copolymers show a decrease in T-g with increasing chromophore content. (C) 1998 Elsevier Science Ltd. All rights reserved.