Studies of UV photochemistry and transition moment directions of 4,5′,8-trimethyl-psoralen (TMP) by means of polarized infrared ATR spectroscopy

Zsuzsa Laczkó, László Harsányi, Sándor Dobos, Judit Fidy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The UV homodimerization of 4,5′,8-trimethyl-psoralen (TMP) both in a solvent and in crystalline thin layers has been investigated. In the crystalline phase, TMP was found to dimerize completely to the trans-anti stereoisomer. On the basis of polarized IR ATR spectra of thin layers deposited onto a KRS-5 plate, both the monomer and the dimer of TMP were found to have well-defined orientations. The directions of several transition moments have been calculated. On irradiating TMP in solution, the photochemical reaction results in the cis-syn stereoisomer.

Original languageEnglish
Pages (from-to)257-266
Number of pages10
JournalJournal of Molecular Structure
Volume118
Issue number3-4
DOIs
Publication statusPublished - Sep 1984

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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