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

Fingerprint

Piroxicam
Proton transfer
Excited states
atomic energy levels
protons
tautomers
Toluene
excitation
toluene
ethyl alcohol
Ethanol
Fluorescence
fluorescence
room temperature
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Cho, Dae Won ; Kim, Yong Hee ; Yoon, Minjoong ; Jeoung, Sae Chae ; Kim, Dongho. / Dynamics of excited-state intramolecular proton transfer reactions in piroxicam. Role of triplet states. In: Chemical Physics Letters. 1994 ; Vol. 226, No. 3-4. pp. 275-280.
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Dynamics of excited-state intramolecular proton transfer reactions in piroxicam. Role of triplet states. / Cho, Dae Won; Kim, Yong Hee; Yoon, Minjoong; Jeoung, Sae Chae; Kim, Dongho.

In: Chemical Physics Letters, Vol. 226, No. 3-4, 19.08.1994, p. 275-280.

Research output: Contribution to journalArticle

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AU - Kim, Dongho

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