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권오훈

Kwon, Oh Hoon
Ultrafast Laser Spectroscopy and Nano-microscopy Lab.
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dc.citation.endPage 8980 -
dc.citation.number 25 -
dc.citation.startPage 8974 -
dc.citation.title PHYSICAL CHEMISTRY CHEMICAL PHYSICS -
dc.citation.volume 14 -
dc.contributor.author Kwon, Oh Hoon -
dc.contributor.author Mohammed, Omar F. -
dc.date.accessioned 2023-12-22T05:38:12Z -
dc.date.available 2023-12-22T05:38:12Z -
dc.date.created 2014-11-12 -
dc.date.issued 2012 -
dc.description.abstract The pronounced ability of water to form a hyperdense hydrogen (H)-bond network among itself is at the heart of its exceptional properties. Due to the unique H-bonding capability and amphoteric nature, water is not only a passive medium, but also behaves as an active participant in many chemical and biological reactions. Here, we reveal the catalytic role of a short water wire, composed of two (or three) water molecules, in model aqueous acid-base reactions synthesizing 7-hydroxyquinoline derivatives. Utilizing femtosecond-resolved fluorescence spectroscopy, we tracked the trajectories of excited-state proton transfer and discovered that proton hopping along the water wire accomplishes the reaction more efficiently compared to the transfer occurring with bulk water clusters. Our finding suggests that the directionality of the proton movements along the charge-gradient H-bond network may be a key element for long-distance proton translocation in biological systems, as the H-bond networks wiring acidic and basic sites distal to each other can provide a shortcut for a proton in searching a global minimum on a complex energy landscape to its destination. -
dc.identifier.bibliographicCitation PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.14, no.25, pp.8974 - 8980 -
dc.identifier.doi 10.1039/c2cp23796b -
dc.identifier.issn 1463-9076 -
dc.identifier.scopusid 2-s2.0-84862271857 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8686 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84862271857 -
dc.identifier.wosid 000305006200022 -
dc.language 영어 -
dc.publisher ROYAL SOC CHEMISTRY -
dc.title Water-wire catalysis in photoinduced acid-base reactions -
dc.type Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus STATE PROTON-TRANSFER -
dc.subject.keywordPlus TAUTOMERIZATION DYNAMICS -
dc.subject.keywordPlus ATOM-TRANSFER -
dc.subject.keywordPlus 7-HYDROXYQUINOLINE -
dc.subject.keywordPlus SPECTROSCOPY -
dc.subject.keywordPlus SYSTEMS -
dc.subject.keywordPlus SOLVATION -
dc.subject.keywordPlus MOLECULES -
dc.subject.keywordPlus CHAIN -

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