Interaction of molecular and polymolecular forms of a dye

Autor:	L. I. Manchenko, V. P. Churashov, S. A. Zhukov, O. I. Sviridova, A. V. Tyurin, T. F. Levitskaya
Rok vydání:	2008
Předmět:	Adsorption Chemistry Molecule Luminescence Photochemistry Fluorescence J-aggregate Atomic and Molecular Physics and Optics Excitation Electronic Optical and Magnetic Materials
Zdroj:	Optics and Spectroscopy. 104:88-94
ISSN:	1562-6911 0030-400X
DOI:	10.1134/s0030400x08010128
Popis:	A luminescence method is proposed, which makes it possible to control interactions between molecular and polymolecular forms of a dye in AgHal emulsions, responsible for the self-desensitization of the first and second kinds. This allows one to determine an optimal concentration of a dye upon its application. An anomalously delayed anti-Stokes fluorescence of a molecular dye, which is responsible for self-desensitization of the second kind, is observed for the first time upon excitation of J aggregates of the dye. A mechanism for the self-desensitization of the first kind is proposed, which is connected with interactions between the J aggregate of a dye and dye molecules adsorbed on its surface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::453df411271296ffc7f10c821b5097b0 https://doi.org/10.1134/s0030400x08010128 Zobrazit plný text záznamu Plný text ve formátu PDF