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Proceedings Paper

Spectral manifestation of distorted forms of metalloporphins in solid matrices
Author(s): A. Starukhin; M. Kruk
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Paper Abstract

In this paper we report the spectral manifestation of different spectral forms obtained for Mg-, Zn-, Pd- and Pt-porphins in solid matrices (Shpol'skii matrices, solid tetrahydrofuran and rare gas matrices) at cryogenic temperatures. The planar and two kinds of distorted conformations of Mg-, Zn-porphins in highly-resolved fluorescence spectra have been detected. For Zn-porphin distorted forms have been detected in the fluorescence and phosphorescence spectra simultaneously. In the phosphorescence spectra of the Pd- and Pt-porphins the manifestation of the two forms in the ground state has been proved also. Energy splitting in the phosphorescence spectrum of the Pd-porphin in n-octane at 4,2 K comes to 78 cm-1 for two forms of the Pd-porphin. Under selective excitation in S0-S1 channel the large set of sharp lines was detected for each of two forms and vibrational frequencies have been determined. In highly-resolved phosphorescence spectra of Pt-porphin in n-octane at 4,2 K we have detected similar manifestation of the two spectral forms in the phosphorescence spectrum. To estimate the type of molecule distortion the information about the frequencies of vibronic modes from well-resolved spectra of metalloporphins have been used.

Paper Details

Date Published: 9 July 2007
PDF: 10 pages
Proc. SPIE 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics, 67272Q (9 July 2007); doi: 10.1117/12.752500
Show Author Affiliations
A. Starukhin, Institute of Molecular and Atomic Physics (Belarus)
M. Kruk, Institute of Molecular and Atomic Physics (Belarus)


Published in SPIE Proceedings Vol. 6727:
ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics

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