Excitonic Interactions in Organic Pigments and Their Similarity to J-aggregates
光機能性材料における色素J会合体の化学 顔料結晶における励起子相互作用とJ会合体との関連性について

2007 Journal of The Society of Photographic Science and Technology of Japan  
Interactions between excited molecules will prevail in organic crystals or aggregates, provided that the absorption coefficient of the component molecule is high and they are arranged periodically. This phenomenon is called excitonic interactions(i.e. interactions between transition dipoles) observed often in dyestuffs and pigments that induces spectral shifts or band splitting(Davydov splitting). The present paper describes an overview of the exciton theory and presents some examples which include J-aggregates of cyanine dyestuffs.
doi:10.11454/photogrst1964.70.268 fatcat:pymdtye46zbj3oll6aftsy3uau