DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Sukki | ko |
dc.contributor.author | Lee, Jinho | ko |
dc.contributor.author | Jeon, Seokwoo | ko |
dc.date.accessioned | 2023-08-08T01:00:44Z | - |
dc.date.available | 2023-08-08T01:00:44Z | - |
dc.date.created | 2023-08-07 | - |
dc.date.created | 2023-08-07 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.citation | SCIENCE ADVANCES, v.9, no.7 | - |
dc.identifier.issn | 2375-2548 | - |
dc.identifier.uri | http://hdl.handle.net/10203/311218 | - |
dc.description.abstract | Graphene quantum dots (GQDs) are nanosized graphene derivatives with unique photoluminescence (PL) prop-erties that have advantages in optoelectronic applications due to their stable blue light emission. However, ag-gregation-caused quenching (ACQ) of GQDs limits the practical applications on light-emitting diodes. Here, we suppress the ACQ phenomena of GQDs by reducing the size and converting GQDs into aggregation-induced emission (AIE)-active materials. As the size of GQDs is reduced from 5 to 1 nm, their solid-state PL quantum yields (PLQYs) are improved from 0.5 to 2.5%, preventing ACQ. Two different rotor molecules, benzylamine (BA) and 4,4 & PRIME;-(1,2-diphenylethene-1,2-diyl)diphenol (TPE-DOH), are selectively functionalized by substituting carboxylic acid and carbonyl functional groups. All functionalized GQDs show AIE behaviors with significantly enhanced solid-state PLQYs, up to 16.8%. Afterglow measurements and theoretical calculations reveal that se-lective functionalization hinders inter-and intramolecular charge transfer, which enhances the fluorescence rate of GQDs and corresponding PLQY. | - |
dc.language | English | - |
dc.publisher | AMER ASSOC ADVANCEMENT SCIENCE | - |
dc.title | Aggregation-induced emission of matrix-free graphene quantum dots via selective edge functionalization of rotor molecules | - |
dc.type | Article | - |
dc.identifier.wosid | 001020437200015 | - |
dc.identifier.scopusid | 2-s2.0-85148325518 | - |
dc.type.rims | ART | - |
dc.citation.volume | 9 | - |
dc.citation.issue | 7 | - |
dc.citation.publicationname | SCIENCE ADVANCES | - |
dc.identifier.doi | 10.1126/sciadv.ade2585 | - |
dc.contributor.localauthor | Jeon, Seokwoo | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | GRAM-SCALE SYNTHESIS | - |
dc.subject.keywordPlus | CHARGE-TRANSFER | - |
dc.subject.keywordPlus | STATE | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | PHOSPHORESCENCE | - |
dc.subject.keywordPlus | FLUORESCENCE | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | PHOTOPHYSICS | - |
dc.subject.keywordPlus | ALDEHYDES | - |
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