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Proceedings Paper

Study of excitonic states of J-aggregates of a tiacyanine dye by methods of picosecond spectroscopy and persistent hole burning
Author(s): Mikhail A. Drobizhev; M. N. Sapozhnikov; O. P. Varnavsky; A. G. Vitukhnovsky; Gennady Imeshev; M. N. Ushomirsky
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Paper Abstract

J-aggregates of tiacarbocyanine derivative are investigated in frozen solution at low temperatures by optical spectroscopy and spectral hole burning. It is found that absorption and luminescence bands have inhomogeneous widths of 220 and 130 cm-1 at 5 K respectively used in contrast to pseudoisocyanine (PIC) J-bands are separated by Stokes shift of 100 cm-1. Moreover, J-aggregate fluorescence spectrum depends drastically on the temperature and initial dye concentration. Temperature broadening of spectral hole, burnt in the J-absorption band differs qualitatively from that, burnt in the monomeric band. It differs also, but quantitatively, from broadening of the spectral hole in J-band of PIC. These observations are discussed in terms of nonradiative relaxation of excitons in the system under investigation.

Paper Details

Date Published: 9 February 1995
PDF: 9 pages
Proc. SPIE 2362, International Conference on Excitonic Processes in Condensed Matter, (9 February 1995); doi: 10.1117/12.200979
Show Author Affiliations
Mikhail A. Drobizhev, P.N. Lebedev Physical Institute (Russia)
M. N. Sapozhnikov, P.N. Lebedev Physical Institute (Russia)
O. P. Varnavsky, P.N. Lebedev Physical Institute (Russia)
A. G. Vitukhnovsky, P.N. Lebedev Physical Institute (Russia)
Gennady Imeshev, Northeastern Univ. (United States)
M. N. Ushomirsky, INFO-PHOTO Ltd. (Russia)

Published in SPIE Proceedings Vol. 2362:
International Conference on Excitonic Processes in Condensed Matter
Jai Singh, Editor(s)

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