FT-IR studies of N-hexadecyl-5-iminomethyl-8-hydroxyquinoline Langmuir-Blodgett films

Molecular orientation and order-disorder transition of Langmuir-Blodgett fi lms of a novel amphiphile, N-Hexadecyl-5-iminomethyl-8-Hydroxyquinoline (HI HQ), were studied via FT-IR spectra measurements. Different spectral featur es were observed of HIHQ in solid state, cast films and LB films. In the LB films of HIHQ, the interaction between the first monolayer and the substra te is very weak and LB films display a very uniform property from layer to layer. FT-IR transmission spectra of HIHQ LB Alms measured at different tem perature show that the order-disorder transition occurs in the temperature range of 50-70 degrees C. (C) 2000 Elsevier Science S.A. All rights reserve d.