Abstract: The LB films of two fluorescent molectiles,4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran(DCM)and 1,2-bis(5-methylbenzoxazol-2-yl)ethylene(DT)and their mixture were prepared. The configtiration, micro environment and luminescenceproperties of these molecules in films have been investigated by absorption and fluorcscencespectroscopy, The content of cis-form DCM in LB film was found to be greatly increascd incomparison with that in solution.

Key words: fluorescent LB film, dicyanomethylene-methyl-p-dimethylaminostyryl-4H-py-ran, bis(methylbenzoxazolyl)ethylene