Yq. Liu et al., LANGMUIR-BLODGETT-FILM FORMATION AND OPTICAL 2ND-HARMONIC GENERATION OF A HEMICYANINE DERIVATIVE, Gaodeng xuexiao huaxue xuebao, 16(11), 1995, pp. 275-278
Langmuir-Blodgett (LB) film of a hemicyanine derivative, cyl-4-[2-(4-d
imethylaminophenyl)ethenyl]pyridinium bromide(Hc) was fabricated. The
Langmuir film of He exhibited good transfer behaviour. Optical second
harmonic generation from the LB film was measured. Macroscopic second-
order susceptibility, molecular hyperpolarizability and tilt angle for
tile molecules on a substrate were estimated to be 7.06 X 10(-6) esu,
6.47 X 10(-27) esu, and 31.6 degrees respectively.