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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 9653 | - |
dc.citation.number | 39 | - |
dc.citation.startPage | 9649 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY A | - |
dc.citation.volume | 111 | - |
dc.contributor.author | Park, Sanghyuk | - |
dc.contributor.author | Kwon, Oh Hoon | - |
dc.contributor.author | Lee, Young-Shin | - |
dc.contributor.author | Jang, Du-Jeon | - |
dc.contributor.author | Park, Soo Young | - |
dc.date.accessioned | 2023-12-22T09:09:18Z | - |
dc.date.available | 2023-12-22T09:09:18Z | - |
dc.date.created | 2014-11-13 | - |
dc.date.issued | 2007-10 | - |
dc.description.abstract | We report the first observation of thermally activated delayed fluorescence (TDF) from an excited-state intramolecular proton-transfer (ESIPT) molecule, a hydroxyl-substituted tetraphenyl imidazole derivative (HPIAc), in degassed solutions as well as in low-temperature organic matrixes. In the absence of oxygen, the blue emission of an identical spectral feature was observed in the nanosecond (∼4.4 ns) and microsecond (∼25 /is) time domains, and the fluorescence intensity increased with temperature. From the temperature dependence of the time-resolved spectra of HPI-Ac, the energy gap between the first-excited singlet state and the lowest triplet state was determined to be 7.6 ±0.3 kJ/mol (630 ± 25 cm -1), and the limiting rate constant of intrinsic reverse intersystem crossing was estimated to be 1.3 (±0.5) × 10 7 s -1. | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY A, v.111, no.39, pp.9649 - 9653 | - |
dc.identifier.doi | 10.1021/jp072212p | - |
dc.identifier.issn | 1089-5639 | - |
dc.identifier.scopusid | 2-s2.0-35348945806 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/8758 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=35348945806 | - |
dc.identifier.wosid | 000249838100003 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Imidazole-based excited-state intramolecular proton-transfer(ESIPT) materials: Observation of thermally activated delayed fluorescence(TDF) | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | AMPLIFIED SPONTANEOUS EMISSION | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | PROTON-TRANSFER SPECTROSCOPY |
- |
dc.subject.keywordPlus | PHOTOPHYSICAL PROPERTIES | - |
dc.subject.keywordPlus | OPTICAL GAIN | - |
dc.subject.keywordPlus | C-70 | - |
dc.subject.keywordPlus | PHOSPHORESCENCE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | POLYMERS | - |
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