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Kwon, Oh Hoon
Ultrafast Laser Spectroscopy and Nano-microscopy (ULSaN Lab)
Research Interests
  • Femtochemistry/biology, 4D electron microscopy, structural dynamics, materials phenomena

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Proton transfer of excited 7-azaindole in reverse-micellar methanol nanopools: Even faster than in bulk methanol

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Title
Proton transfer of excited 7-azaindole in reverse-micellar methanol nanopools: Even faster than in bulk methanol
Author
Kwon, Oh HoonJang, DJ
Issue Date
2005-04
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY B, v.109, no.16, pp.8049 - 8052
Abstract
The methanol-catalyzed double-proton transfer of photoexcited 7-azaindole in the free cores of solvation-restricted reverse micelles takes place on the time scale of 90 ps, even shorter than in bulk methanol. This anomalous rate increase with a large kinetic isotope effect of 5 experimentally proves the widely discussed two-step model for the overall reaction of solvent-mediated proton transfer. On the other hand, the molecules in the bound layers and in the headgroup layers relax in 900 and 6000 ps, respectively, without going through proton transfer. The tautomerization and the relaxation of excited 7-azaindole can be exploited to probe the nanopools of methanol reverse micelles.
URI
https://scholarworks.unist.ac.kr/handle/201301/8783
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=18444396581
DOI
10.1021/jp050743c
ISSN
1520-6106
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CHM_Journal Papers
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