Synthesis of Single-Crystalline Hexagonal Graphene Quantum Dots from Solution Chemistry

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dc.contributor.authorLee, Seok Hwanko
dc.contributor.authorKim, Do-Youbko
dc.contributor.authorLee, Jaeminko
dc.contributor.authorLee, Seul Beeko
dc.contributor.authorHan, Hyunko
dc.contributor.authorKim, Young Yunko
dc.contributor.authorMun, Sung Cikko
dc.contributor.authorIm, Sang Hyukko
dc.contributor.authorKim, Tae-Hoko
dc.contributor.authorPark, O. Okko
dc.date.accessioned2019-09-03T06:20:36Z-
dc.date.available2019-09-03T06:20:36Z-
dc.date.created2019-09-02-
dc.date.created2019-09-02-
dc.date.issued2019-08-
dc.identifier.citationNANO LETTERS, v.19, no.8, pp.5437 - 5442-
dc.identifier.issn1530-6984-
dc.identifier.urihttp://hdl.handle.net/10203/266621-
dc.description.abstractGraphene-based carbon nanostructures with nanometer dimensions have been of great interest due to the existence of a bandgap. So-far, well-ordered edge structure and uniformly synthesized graphene quantum dots (GQDs) with a hexagonal single-crystalline structure have not been directly observed owing to the limited precision of current synthesis approaches. Herein, we report on a novel approach not just for the synthesis of the size-controlled single-crystalline GQDs with hexagonal shape but also for a new discovery on constructing 2D and 3D graphene single crystal structures from n-glucose via catalytic solution chemistry. With size-controlled single-crystalline GQDs, we elucidated the crucial role of edge states on luminescence from the correlation between their crystalline size and exciton lifetime. Furthermore, blue-emissive single-crystalline GQDs were used as an emitter on light-emitting diodes and exhibit stable deep-blue emission regardless of the voltage and doping level.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleSynthesis of Single-Crystalline Hexagonal Graphene Quantum Dots from Solution Chemistry-
dc.typeArticle-
dc.identifier.wosid000481563800080-
dc.identifier.scopusid2-s2.0-85071355843-
dc.type.rimsART-
dc.citation.volume19-
dc.citation.issue8-
dc.citation.beginningpage5437-
dc.citation.endingpage5442-
dc.citation.publicationnameNANO LETTERS-
dc.identifier.doi10.1021/acs.nanolett.9b01940-
dc.contributor.localauthorPark, O. Ok-
dc.contributor.nonIdAuthorLee, Jaemin-
dc.contributor.nonIdAuthorLee, Seul Bee-
dc.contributor.nonIdAuthorHan, Hyun-
dc.contributor.nonIdAuthorIm, Sang Hyuk-
dc.contributor.nonIdAuthorKim, Tae-Ho-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorGraphene quantum dots-
dc.subject.keywordAuthorbottom-up synthesis-
dc.subject.keywordAuthorsingle-crystalline-
dc.subject.keywordAuthorhexagonal structure-
dc.subject.keywordAuthordeep-blue electroluminescence-
dc.subject.keywordPlusCARBON NANODOTS-
dc.subject.keywordPlusLUMINESCENCE-
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