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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 10074 | - |
dc.citation.number | 28 | - |
dc.citation.startPage | 10070 | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 127 | - |
dc.contributor.author | Park, S | - |
dc.contributor.author | Kwon, Oh Hoon | - |
dc.contributor.author | Kim, S | - |
dc.contributor.author | Choi, MG | - |
dc.contributor.author | Cha, M | - |
dc.contributor.author | Park, SY | - |
dc.contributor.author | Jang, DJ | - |
dc.date.accessioned | 2023-12-22T10:36:05Z | - |
dc.date.available | 2023-12-22T10:36:05Z | - |
dc.date.created | 2014-11-13 | - |
dc.date.issued | 2005-07 | - |
dc.description.abstract | We have synthesized a novel class of imidazole-based excited-state intramolecular proton-transfer (ESIPT) materials, i.e., hydroxy-substituted tetraphenylimidazole (HPI) and its derivative HPI-Ac, which formed large single crystals exhibiting intense blue fluorescence and amplified spontaneous emission (ASE). Transparent, clear, and well-defined fluorescent single crystals of HPI-Ac as large as 20 mm × 25 mm × 5 mm were easily grown from its dilute solution. From the X-ray crystallographic analysis and semiempirical molecular orbital calculation, it was deduced that the four phenyl groups substituted into the imidazole ring of HPI and HPI-Ac allowed the crystals free from concentration quenching of fluorescence by limiting the excessive tight-stacking responsible for intermolecular vibrational coupling and relevant nonradiative relaxation. Fluorescence spectral narrowing and efficient ASE were observed in the HPI-Ac single crystal even at low excitation levels attributed to the intrinsic four-level ESIPT photocycle. | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.127, no.28, pp.10070 - 10074 | - |
dc.identifier.doi | 10.1021/ja0508727 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.scopusid | 2-s2.0-22244443103 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/8779 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=22244443103 | - |
dc.identifier.wosid | 000230657900044 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Imidazole-based excited-state intramolecular proton-transfer materials: Synthesis and amplified spontaneous emission from a large single crystal | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | STIMULATED-EMISSION | - |
dc.subject.keywordPlus | TRANSFER SPECTROSCOPY | - |
dc.subject.keywordPlus | CO-OLIGOMER | - |
dc.subject.keywordPlus | LASERS | - |
dc.subject.keywordPlus | 3-HYDROXYFLAVONE | - |
dc.subject.keywordPlus | COPOLYMERS | - |
dc.subject.keywordPlus | MOLECULES | - |
dc.subject.keywordPlus | DYNAMICS | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | SYSTEM | - |
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