Nonlinear optical activity of polymer materials doped with quinoxaline-based chromophores containing TBDPSO groups

Nonlinear optical (NLO) activity of polymer materials doped with 30 and 40 wt% load of two novel thermally stable quinoxaline-based chromophores with bulky TBDPSO groups in donor fragments was studied by second harmonic generation technique. Poled thin polymer film with chromophore B containing five various bulky substituents demonstrates low d(33) values (14-19 pm/V). Oppositely, composite material with 30 wt% load of chromophore A, which does not contain bulky substituents in acceptor moiety, have shown enhanced NLO activity (up to 51 pm/V).