Excited state spectra and dynamics of phenyl-substituted butadienes

Autor:	W. Atom Yee, Benjamin J. Schwartz, M. Ashraf El-Bayoumi, David S. Kliger, Stacie E. Wallace-Williams, Soeren Moeller, Robert A. Goldbeck
Rok vydání:	1994
Předmět:	Absorption spectroscopy Chemistry General Engineering Nanosecond Molecular physics symbols.namesake Picosecond Excited state Stokes shift Femtosecond Ultrafast laser spectroscopy symbols Physical and Theoretical Chemistry Absorption (electromagnetic radiation)
Zdroj:	The Journal of Physical Chemistry. 98:60-67
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100052a011
Popis:	A combination of steady-state and dynamic spectral measurements are used to provide new insights into the nature of the excited-state processes of all-trans-1,4-diphenyl-1,3-butadiene and several analogs: 1,4-diphenyl- 1,3-cyclopentadiene, 1,1,4,4-tetraphenylbutadiene, 1,2,3,4-tetraphenyl-1,3-cyclopentadiene, and E,E-diindanylidenylethane. Ground-state absorption, fluorescence, and nanosecond transient absorption measurements identify geometry changes upon excitation and provide information regarding the nature of the first excited singlet state. Femtosecond and picosecond transient absorption data indicate that phenyl torsional motion is not important to the excited-state dynamics and reveal alternative excited-state reaction pathways
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::edf183fb7f94c7a7389f789669ea8395 https://doi.org/10.1021/j100052a011 Zobrazit plný text záznamu