A detailed investigation of light-harvesting efficiency of blue color emitting divergent iridium dendrimers with peripheral phenylcarbazole units
DC Field | Value | Language |
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dc.contributor.author | Cho, Yang-Jin | - |
dc.contributor.author | Wee, Kyung-Ryang | - |
dc.contributor.author | Son, Ho-Jin | - |
dc.contributor.author | Cho, Dae Won | - |
dc.contributor.author | Kang, Sang Ook | - |
dc.date.accessioned | 2021-09-05T17:09:36Z | - |
dc.date.available | 2021-09-05T17:09:36Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101106 | - |
dc.description.abstract | The increase in phosphorescence efficiency was estimated by the energy transfer mechanism for divergent iridium dendrimers with peripheral phenylcarbazole units. A series of Ir-core/phenylcarbazole-end dendrons of the type, Ir(dfppy)(2)(pic-Cz(n)) (Gn, n = 0, 1, 2, and 3), was synthesized, where dfppy, pic, and Cz(n) (n = 2, 4, and 8) are 2-(4,6-difluorophenyl)pyridine, picolinate substituted with Cz(n) at the 3-position, and 4-(9-carbazolyl)phenyldendrons connected with 3,5-di(methyleneoxy)benzyloxy branches, respectively. Selective excitation of the Cz(n) units of G1-G3 resulted in >90% quenching of the Cz fluorescence accompanied by the growth of phosphorescence from the Ir(dfppy) 2(pic) core as a consequence of energy transfer from the excited-singlet Cz(n) chromophore to the core. The rate constants of energy transfer were determined by steady-state and transient spectroscopic measurements to be 4.32 x 10(9) s(-1) (G1), 2.37 x 10(9) s(-1) (G2), and 1.46 x 10(9) s(-1) (G3), which were in good agreement with those calculated using the Forster model. The phosphorescence enhancements were 157 (G1), 213 (G2), and 264% (G3) when compared to the phosphorescence of the core Ir(dfppy)(2)(pic-Ph-2) (G0), in which pic-Ph-2 is 3-(3,5-dibenzyloxybenzyl) picolinate. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | CYCLOMETALATED IRIDIUM(III) | - |
dc.subject | PHOTOPHYSICAL PROPERTIES | - |
dc.subject | ELECTRON-TRANSFER | - |
dc.subject | EXCITED-STATES | - |
dc.subject | SINGLE-LAYER | - |
dc.subject | ELECTROCHEMICAL-BEHAVIOR | - |
dc.subject | IR(III) COMPLEXES | - |
dc.subject | PROTEIN-BINDING | - |
dc.subject | ENERGY-TRANSFER | - |
dc.subject | PHOSPHORESCENT | - |
dc.title | A detailed investigation of light-harvesting efficiency of blue color emitting divergent iridium dendrimers with peripheral phenylcarbazole units | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Son, Ho-Jin | - |
dc.contributor.affiliatedAuthor | Cho, Dae Won | - |
dc.contributor.affiliatedAuthor | Kang, Sang Ook | - |
dc.identifier.doi | 10.1039/c3cp53797h | - |
dc.identifier.scopusid | 2-s2.0-84894131463 | - |
dc.identifier.wosid | 000332393200010 | - |
dc.identifier.bibliographicCitation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.16, no.10, pp.4510 - 4521 | - |
dc.relation.isPartOf | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.title | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.volume | 16 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 4510 | - |
dc.citation.endPage | 4521 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.subject.keywordPlus | CYCLOMETALATED IRIDIUM(III) | - |
dc.subject.keywordPlus | PHOTOPHYSICAL PROPERTIES | - |
dc.subject.keywordPlus | ELECTRON-TRANSFER | - |
dc.subject.keywordPlus | EXCITED-STATES | - |
dc.subject.keywordPlus | SINGLE-LAYER | - |
dc.subject.keywordPlus | ELECTROCHEMICAL-BEHAVIOR | - |
dc.subject.keywordPlus | IR(III) COMPLEXES | - |
dc.subject.keywordPlus | PROTEIN-BINDING | - |
dc.subject.keywordPlus | ENERGY-TRANSFER | - |
dc.subject.keywordPlus | PHOSPHORESCENT | - |
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