Abstract

Structure of J-aggregates has been discussed by many scientists after the discovery of J-aggregates. An aggregate is supposed to be composed of dye molecules aligned in one-dimensional chain. A sharp absorption band, called J-band, below the monomer transition is due to the exciton delocalized over an aggregate. However, a one-dimensional model is too simple to explain the optical properties of J-aggregates, and the detailed structure is still open to question. Recently, we were successful in making oriented J-aggregates in a polymer film by a novel method named vertical spin-coating.

© 1996 Optical Society of America