Abstract
Quasi-line fluorescence and fluorescence-excitation spectra of tetrabenzoporphin (H2TBP) and its deuterated derivative (D2TBP) in n-octane at 77 K were measured and analyzed. A calculation of normal vibrations of the H2TBP and D2TBP molecules has been performed. The normal vibrations of these molecules were calculated with the use of the valence force fields of porphin and phenanthrene (the direct spectral problem was solved). Good agreement between the calculated and measured frequencies of the investigated normal vibrations has been obtained without correction of the transfered force constants. A detailed interpretation of the fluorescence spectra obtained is presented. It is shown that on deuteration of H2TBP, the behavior of the quasi-lines in the fluorescence-excitation spectra in the region of resonance with the S2←S0 transition becomes more complex.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 3, pp. 375–382, May–June, 1999.
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Shkirman, S.F., Gladkov, L.L., Konstantinova, V.K. et al. Analysis of electronic vibration spectra of tetrabenzoporphin molecules on the basis of calculations of their normal vibrations. J Appl Spectrosc 66, 400–409 (1999). https://doi.org/10.1007/BF02676772
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DOI: https://doi.org/10.1007/BF02676772