DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Changmin | - |
dc.contributor.author | Chung, Seyoung | - |
dc.contributor.author | Song, Hayoung | - |
dc.contributor.author | Rhee, Young Min | - |
dc.contributor.author | Lee, Eunsung | - |
dc.contributor.author | Joo, Taiha | - |
dc.date.accessioned | 2021-06-13T03:51:14Z | - |
dc.date.available | 2021-06-13T03:51:14Z | - |
dc.date.created | 2020-12-10 | - |
dc.date.issued | 2021-03 | - |
dc.identifier.issn | 2367-0932 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/106690 | - |
dc.description.abstract | Quinone cyanine 9 (QCy9) is one of the strongest photoacids known to date. The origin of "super"-photoacidity was investigated via time-resolved fluorescence (TF) with high time resolution to accurately resolve the ultrafast dynamics of the excited-state proton transfer (ESPT) to solvent. The ESPT of QCy9 in water is found to proceed fully by two ultrafast time constants of 40 fs (65 %) and 200 fs (35 %). More importantly, the initially created base form of QCy9 in the excited state undergoes a significant dynamic red shift of over 2700 cm(-1) by solvation. We suggest that the entirely ultrafast reaction rate and the massive solvation of the conjugate base could make QCy9 a particularly strong photoacid. Quantum chemical calculations show that structural diversity leads to the nonexponential behavior of the ESPT dynamics. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.relation.isPartOf | CHEMPHOTOCHEM | - |
dc.title | Excited State Proton Transfer of Quinone Cyanine 9: Implications on the Origin of Super-Photoacidity | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/cptc.202000254 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | CHEMPHOTOCHEM, v.5, no.3, pp.245 - 252 | - |
dc.identifier.wosid | 000591382400001 | - |
dc.citation.endPage | 252 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 245 | - |
dc.citation.title | CHEMPHOTOCHEM | - |
dc.citation.volume | 5 | - |
dc.contributor.affiliatedAuthor | Lee, Changmin | - |
dc.contributor.affiliatedAuthor | Chung, Seyoung | - |
dc.contributor.affiliatedAuthor | Song, Hayoung | - |
dc.contributor.affiliatedAuthor | Lee, Eunsung | - |
dc.contributor.affiliatedAuthor | Joo, Taiha | - |
dc.identifier.scopusid | 2-s2.0-85096725166 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | CHARGE-TRANSFER DYNAMICS | - |
dc.subject.keywordPlus | FREE-ENERGY RELATIONS | - |
dc.subject.keywordPlus | SOLVATION DYNAMICS | - |
dc.subject.keywordPlus | POLAR ENVIRONMENT | - |
dc.subject.keywordPlus | SOLVENT | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordPlus | 4&apos | - |
dc.subject.keywordPlus | -N,N-DIETHYLAMINO-3-HYDROXYFLAVONE | - |
dc.subject.keywordPlus | 1-NAPHTHOL | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordAuthor | excited states | - |
dc.subject.keywordAuthor | proton transfer | - |
dc.subject.keywordAuthor | photoacidity | - |
dc.subject.keywordAuthor | time-resolved spectroscopy | - |
dc.subject.keywordAuthor | solvation dynamics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
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