A novel NLO chromophore with a five-membered heteromatics was synthesi
zed. The chromophore was dispersed into two high-T-g polymers, PEK-C a
nd PES-C. Then they were spin coated onto ITO glass and were poled by
employing a corona poling technique. The relaxation behaviour of poled
films was studied by using UV-Vis spectra. Good temporal stability wa
s found for all the samples. (C) 1998 Published by Elsevier Science Lt
d. All rights reserved.