Electronic absorption spectra of pyrene and hydropyrenes.

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概要

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• Vibronic π-π<SUP>*</SUP> transition bands of pyrene, 4,5-dihydropyrene (DHP), and 4,5,9,10-tetrahydropyrene (THP) were assigned by means of dichroism analysis using stretched poly(vinyl alcohol) films. The absorption spectra of the samples in the non-stretched films were divided into two component spectra polarized along the long (x) and short (z) axes of the molecular plane. For pyrene, in addition to the four conventionally-assigned band systems (<SUP>1</SUP>L<SUB>b</SUB>, <SUP>1</SUP>L<SUB>a</SUB>, <SUP>1</SUP>B<SUB>b</SUB>, and <SUP>1</SUP>B<SUB>a</SUB>), some forbidden bands were found in the respective band regions. Most of the vibronic DHP and THP bands were also reasonably well assigned from comparisons with the calculated results for phenanthrene and biphenyl, respectively.

• 公益社団法人 日本化学会の論文

著者

• Tanizaki Yoshie

  Department Of Chemistry Nagaoka University Of Technology

• Hiratsuka Hiroshi

  Department Of Chemistry Faculty Of Engineering Gunma University

• Yoshinaga Tetsutaro

  Department Of Applied Chemistry Faculty Of Engineering Kyushu Institute Of Technology

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