DISPERSION BEHAVIOR OF HEMATOPORPHYRIN IN MONOMOLECULAR FILM OF STEARIC-ACID

Dispersion characteristics of the monomolecular films of hematoporphyr in mixed with stearic acid has been studied. The average molecular are as of mixed monolayers coincided approximately with the ideal additivi ty rule when the ''solid'' films were extrapolated to zero surface pre ssure. The orientation of the macrocycles was given by infrared dichro ism with the tilting angle of 10. 1 degrees to the plane of the film. The SERS of LB films deposited on silver island films was observed. Th e results showed that there are two possible contribution, i. e., elec tromagnetic and chemical interaction between the hematoporphyrin molec ules and Ag island films.