Abstract

Excitation energy transport and trapping in molecular assemblies have been the subject in recent theoretical and experimental photophysics. Very little is known about the dynamical characteristics of dipole-dipole energy transfer in restricted geometries of one- and two-dimensional molecular arrangements. The present paper reports on the two-dimensional excitation energy transfer between dye molecules adsorbed on vesicle surface by using a picosecond time-correlated, single-photon counting apparatus [1]. The fluorescence decay curves of the donor are analyzed on the basis of a theoretical framework of "fractal" [2], following a manner of Klafter and Blumen [3]. The fractal denotes a self-similar structure with dilatational symmetry which will have great potential to describe a multitude of irregular structures [2].

© 1986 Optical Society of America