One‐dimensional vibrational excitons in 1,2,4,5‐tetrachlorobenzene

Autor:	A. P. J. M. Jongenelis, J. Schmidt, E. H. Abramson
Rok vydání:	1987
Předmět:	Triplet exciton Chemistry Exciton Physics::Atomic and Molecular Clusters General Physics and Astronomy Emission spectrum Physics::Chemical Physics Physical and Theoretical Chemistry Atomic physics Phosphorescence Line (formation)
Zdroj:	The Journal of Chemical Physics. 87:3719-3723
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.452976
Popis:	We have studied the line shapes of vibronic transitions in the phosphorescence spectrum of the one‐dimensional triplet exciton of TCB between 4.2 and 0.4 K. It is shown that also the vibrational excitons are highly one dimensional. This finding is confirmed by time‐resolved emission spectra. Observed vibron bandwidths vary up to 15 cm−1 with k=0 either at the top or at the bottom of the band. In contrast to the fundamental vibrations, no overtones or combination bands give evidence of a well‐defined one‐dimensional quasimomentum.
Databáze:	OpenAIRE
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