Absorption lineshape of J-aggregates of thiacarbocyanine dyes: experiment and numerical study

Autor:	O.P. Varnavsky, A. G. Vitukhnovsky, Panos Argyrakis, Mikhail Drobizhev, Denis M. Basko, M. Van der Auweraer, Alexander Pimenov, A.N. Lobanov
Rok vydání:	1997
Předmět:	Exponential distribution Absorption spectroscopy Chemistry Exciton Analytical chemistry General Physics and Astronomy Lattice vibration Physical and Theoretical Chemistry Homogeneous broadening Absorption (electromagnetic radiation) Molecular physics J-aggregate
Zdroj:	Chemical Physics Letters. 268:372-380
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(97)00232-7
Popis:	The experimental absorption spectra of J-aggregates of the carbocyanine dye THIATS and TDC were fitted to a segment and a continuous energy disorder (CED) model. From 6 K to room temperature the best fits were obtained using an exponential distribution of segment lengths. Both models gave equally good fits when the average length in the segment model corresponded to the average localization length in the CED model. At room temperature homogeneous broadening or/and an enhanced contribution of the off-diagonal disorder must be taken into account.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::16d7a2f10a6995aa68be82aae52864de https://doi.org/10.1016/s0009-2614(97)00232-7 Zobrazit plný text záznamu Full Text from ScienceDirect