Copper-catalyzed Huisgen cycloaddition reactions used to incorporate NLO chromophores into high Tg Side-Chain Polymers for Electro-Optics

Polymers based on N-phenyl maleimide, N-4-propargyl methoxy phenyl maleimide and methyl methacrylate was synthesized. High glass temperatures 183, 179, 159 degrees C respectively for P1, P2 and P3 were achieved. EO polymer P3-C1, P3-C2 and P3-C3 with about 30 wt% chromophore loading density were prepared by attaching Chromophore C1, C2 and C3 to polymer P3 using, copper-catalyzed Huisgen cycloaddition reactions in mild reaction conditions and high yield. Among the EO polymers, P3-C3 showed us the best solubility in normal solvents and suitable glass temperature. EO films based on EO polymer P3-C3 showed us large EO coefficient of 50 pm/V @1310 nm and good long-term stability, 85% EO activity was kept after annealing at 85 degrees C for 200 h. (C) 2015 Elsevier B.V. All rights reserved.