CIS-TRANS PHOTOISOMERIZATION OF A SURFACTANT O-PROTONATED STILBAZOLIUM BETAINE IN MICELLAR SYSTEMS

Abstract

Recently, much attention has been focused on the cistrans photoisomerization of surfactant derivatives of stil bene and azobenzene when located in assembled surfactant phases, particularly micelles,1,2 vesicles (liposomes/ bilayers),1'4 monolayers spread at the air/water interface,8,6 and Langmuir-Blodgett films deposited on optically transparent substrates.5*7 A number of the azobenzene studies were instigated because it is presently thought that some surfactants which can undergo reversible cis-trans photoisomerization may be able to serve as components in Langmuir-Blodgett thin-film molecular electronic devices. There have been relatively few studies of other types of molecular cis-trans ..