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 language | English |
|---|---|
| Pages (from-to) | 275-280 |
| Number of pages | 6 |
| Journal | Chemical Physics Letters |
| Volume | 226 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 1994 Aug 19 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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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 journal › Article
TY - JOUR
T1 - Dynamics of excited-state intramolecular proton transfer reactions in piroxicam. Role of triplet states
AU - Cho, Dae Won
AU - Kim, Yong Hee
AU - Yoon, Minjoong
AU - Jeoung, Sae Chae
AU - Kim, Dongho
PY - 1994/8/19
Y1 - 1994/8/19
N2 - 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*.
AB - 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*.
UR - http://www.scopus.com/inward/record.url?scp=0012505718&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0012505718&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(94)00742-X
DO - 10.1016/0009-2614(94)00742-X
M3 - Article
AN - SCOPUS:0012505718
VL - 226
SP - 275
EP - 280
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 3-4
ER -