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Proceedings Paper

Time-resolved laser study of the transient absorption and conductivity on iodine-doped beta-carotene films
Author(s): Stanislav L. Bondarev; Sergei M. Bachilo; I. I. Ivanov
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Paper Abstract

The transient microsecond absorption and photoconductivity in thin iodine(I)-doped (beta) - carotene (Car) films have been investigated. The laser nanosecond excitation ((lambda) equals 1064 and 512 nm) of the charge-transfer complex [Car+ (DOT) Ix-] (where x equals 3,5,7) leads to the appearance of a new transient absorption spectrum at 1250 nm. This absorption decays by the hyperbolic low as a result of recombination of charged or neutral particles. The conductivity in doped films is possibly due to the flow of iodine anions in the external electric field. These charged particles arise in an unexcited state of the complex under the thermal influence of a laser pulse.

Paper Details

Date Published: 17 June 1993
PDF: 9 pages
Proc. SPIE 1921, Laser Spectroscopy of Biomolecules, (17 June 1993); doi: 10.1117/12.146113
Show Author Affiliations
Stanislav L. Bondarev, Institute of Molecular and Atomic Physics (Belarus)
Sergei M. Bachilo, Institute of Molecular and Atomic Physics (Belarus)
I. I. Ivanov, Institute of Molecular and Atomic Physics (Belarus)

Published in SPIE Proceedings Vol. 1921:
Laser Spectroscopy of Biomolecules
Jouko E. Korppi-Tommola, Editor(s)

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