Dipolar Excitonic States of Oligo-Anthrylenes

Autor:	John M. Warman, Jacob J. Piet, Klaus Müllen, Martin Baumgarten
Rok vydání:	2002
Předmět:	Anthracene Range (particle radiation) Photochemistry Molecular physics Solvent Photoexcitation chemistry.chemical_compound Delocalized electron Dipole chemistry Physics::Atomic and Molecular Clusters Physics::Chemical Physics Physical and Theoretical Chemistry Sigma bond Benzene
Zdroj:	The Journal of Physical Chemistry A. 106:2318-2321
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp012870o
Popis:	Photoexcitation of dimeric, trimeric, and tetrameric oligomers of anthracene in benzene results in the formation of relaxed S 1 excitonic states with dipole moments of 6.9, 8.0, and 9.1 D respectively. Dipole reversal occurs with a relaxation time in the range of 8 ′ 2 ps and is driven by a combination of fluctuations in the solvent environment and torsional motion about the central sigma bonds. The excitonic interaction at any given moment in time involves mainly only two neighboring anthracene moieties rather than delocalization over all chromophoric units.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81839552446fb24a557aed1440504299 https://doi.org/10.1021/jp012870o