State mixing in indoline derivatives: A steady-state and dynamical-fluorescence spectroscopic study

The polarity-dependent Herzberg—Teller mixing of 1L a- and 1L b-type excited states is investigated for N-ethyl indolines bearing as p-acceptor substituent a cyano (EIN) and a carboxylic acid ethyl ester (EICEE) function. EICEE shows strongly temperature-dependent fluorescence spectral shapes. Low-t...

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Bibliographic Details
Published inChemical physics letters Vol. 187; no. 1; pp. 45 - 52
Main Authors Heisel, Francine, Miehé, Joseph A., Eckert, Caroline, Rettig, Wolfgang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 29.11.1991
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Summary:The polarity-dependent Herzberg—Teller mixing of 1L a- and 1L b-type excited states is investigated for N-ethyl indolines bearing as p-acceptor substituent a cyano (EIN) and a carboxylic acid ethyl ester (EICEE) function. EICEE shows strongly temperature-dependent fluorescence spectral shapes. Low-temperature time-resolved measurements indicate a temporal evolution of the excited-state nature on a time scale faster than that of the solvent relaxation and of the dynamical solvatochromism.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(91)90482-O