Dynamics of excited-state intramolecular proton transfer reactions in piroxicam. Role of triplet states

Dae Won Cho, Yong Hee Kim, Minjoong Yoon, Sae Chae Jeoung, Dongho Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The picosecond time-resolved fluorescence and transient absorption behavior of piroxicam at room temperature are reported. The keto tautomer in the excited singlet state (1K*) formed via the fast intramolecular proton transfer (≈ 20 ps) is observed. The short-lived (7.5 ns) triplet state of keto tauomer (3K*) is generated from 1K* in toluene whereas it is hardly observed in ethanol. Consequently, rapid reverse proton transfer takes place from 3K* to the enol triplet state (3E*.

Original languageEnglish
Pages (from-to)275-280
Number of pages6
JournalChemical Physics Letters
Volume226
Issue number3-4
DOIs
Publication statusPublished - 1994 Aug 19

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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