Nature of Electronic Transitions in Trinuclear Polymethine Dyes

Autor:	A.D. Kachkovski, Alexander A. Ishchenko, Yu.L. Bricks, Alexei I Tolmachev
Rok vydání:	1987
Předmět:	Absorption spectroscopy Chemistry Atomic electron transition Absorption band Process Chemistry and Technology General Chemical Engineering Absorption (chemistry) Photochemistry Bond order Conformational isomerism Molecular electronic transition Visible spectrum
Zdroj:	Dyes and Pigments. 8:353-369
ISSN:	0143-7208
Popis:	Symmetric and asymmetric polymethine dyes with three end-groups have been synthesized and their absorption and fluorescence spectra investigated. The first absorption band of asymmetric dyes containing end-groups with a different effective length has been shown to split. The fluorescence spectra of trinuclear dyes have been used to assign the significant changes which occur upon excitation and, in the case of the asymmetric compounds, two conformers have been detected.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82839c7be8d4e2e3639a6eea1654f784 https://doi.org/10.1016/0143-7208(87)85025-8 Zobrazit plný text záznamu