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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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Triplet-State Acid-Base Reactions of 1-Methyl-7-oxyquinolinium in Water

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Title
Triplet-State Acid-Base Reactions of 1-Methyl-7-oxyquinolinium in Water
Author
Park, Sun-YoungKwon, Oh HoonLee, Young-ShinJang, Du-Jeon
Issue Date
2009-10
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY A, v.113, no.40, pp.10589 - 10592
Abstract
Upon absorption of a photon, the l-methyl-7-oxyquinolinium zwitterion in neutral water undergoes a protontransfer cycle involving protonation at the lowest excited triplet state and redeprotonation at the ground state. On one hand, the proton transfer of a water molecule to the triplet-state zwitterion takes place on the time scale of 28 us with an activation energy of 12.6 kJ mol-1. On the other hand, the ground-state redeprotonation occurs with a rate constant of (13 us)-1, although its reverse reaction of protonation competes with a rate constant of (37 us)-1.
URI
https://scholarworks.unist.ac.kr/handle/201301/8735
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=70349664023
DOI
10.1021/jp907687a
ISSN
1089-5639
Appears in Collections:
CHM_Journal Papers
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