Dipole moments of exciplexes of heteroaromatic compounds with N, N-dimethylaniline

Autor:	M. N. Usacheva, V. V. Osipov, I. I. Dilung, I. V. Drozdenko
Rok vydání:	1985
Předmět:	Azine chemistry.chemical_compound Dipole Chemistry Excited state Phenazine Acridine Enthalpy Physical chemistry Dimethylaniline General Chemistry Photochemistry Excimer
Zdroj:	Theoretical and Experimental Chemistry. 21:462-466
ISSN:	1573-935X 0040-5760
Popis:	The influence of the polarity of a solvent on the position of the maximum of the fluorescence band of exciplexes of N, N-dimethylaniline (DMA) with exctied molecules of phenazine, acridine, and their benzo-, dibenzo- and tetrabenzo derivatives was studied. From the regularities found, the Μ2/γ3h values were evaluated, giving an estimate of the dipole moments of the exciplexes under consideration. An attempt was made to find a correlation between Μ2/ϱ3h values and the value of the enthalpy of formation δH of the corresponding excited complexes. It was concluded that for the first members of the azine series, the Μ2/ρ3h value does not reflect the degree of charge transfer in the exciplex, and cannot be correlated with AH. Explanations are presented which give as the main reason for this lack of correlation the possible conformational changes undergone by the excited molecules of azines during the formation of the exciplexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2eeac2f7941584f679ac5dfd05930867 https://doi.org/10.1007/bf01004521 Zobrazit plný text záznamu Full text from SpringerLink