Please use this identifier to cite or link to this item: https://doi.org/10.1021/ja411643u
DC FieldValue
dc.titleIdentification of a highly luminescent Au22(SG)18 nanocluster
dc.contributor.authorYu, Y.
dc.contributor.authorLuo, Z.
dc.contributor.authorChevrier, D.M.
dc.contributor.authorLeong, D.T.
dc.contributor.authorZhang, P.
dc.contributor.authorJiang, D.-E.
dc.contributor.authorXie, J.
dc.date.accessioned2014-10-09T06:50:37Z
dc.date.available2014-10-09T06:50:37Z
dc.date.issued2014-01-29
dc.identifier.citationYu, Y., Luo, Z., Chevrier, D.M., Leong, D.T., Zhang, P., Jiang, D.-E., Xie, J. (2014-01-29). Identification of a highly luminescent Au22(SG)18 nanocluster. Journal of the American Chemical Society 136 (4) : 1246-1249. ScholarBank@NUS Repository. https://doi.org/10.1021/ja411643u
dc.identifier.issn00027863
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/89158
dc.description.abstractThe luminescence property of thiolated gold nanoclusters (Au NCs) is thought to involve the Au(I)-thiolate motifs on the NC surface; however, this hypothesis remains largely unexplored because of the lack of precise molecular composition and structural information of highly luminescent Au NCs. Here we report a new red-emitting thiolated Au NC, which has a precise molecular formula of Au22(SR)18 and exhibits intense luminescence. Interestingly, this new Au22(SR)18 species shows distinctively different absorption and emission features from the previously reported Au22(SR)16, Au22(SR)17, and Au25(SR)18. In stark contrast, Au22(SR) 18 luminesces intensely at ∼665 nm with a high quantum yield of ∼8%, while the other three Au NCs show very weak luminescence. Our results indicate that the luminescence of Au22(SR)18 originates from the long Au(I)-thiolate motifs on the NC surface via the aggregation-induced emission pathway. Structure prediction by density functional theory suggests that Au22(SR)18 has two RS-[Au-SR] 3 and two RS-[Au-SR]4 motifs, interlocked and capping on a prolate Au8 core. This predicted structure is further verified experimentally by Au L3-edge X-ray absorption fine structure analysis. © 2014 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/ja411643u
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1021/ja411643u
dc.description.sourcetitleJournal of the American Chemical Society
dc.description.volume136
dc.description.issue4
dc.description.page1246-1249
dc.description.codenJACSA
dc.identifier.isiut000330598600023
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

371
checked on May 17, 2022

WEB OF SCIENCETM
Citations

404
checked on May 17, 2022

Page view(s)

144
checked on May 12, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.