Please use this identifier to cite or link to this item: https://doi.org/10.1002/anie.201311177
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dc.titleBalancing the rate of cluster growth and etching for gram-scale synthesis of thiolate-protected Au25 nanoclusters with atomic precision
dc.contributor.authorYuan, X.
dc.contributor.authorZhang, B.
dc.contributor.authorLuo, Z.
dc.contributor.authorYao, Q.
dc.contributor.authorLeong, D.T.
dc.contributor.authorYan, N.
dc.contributor.authorXie, J.
dc.date.accessioned2014-10-09T06:43:49Z
dc.date.available2014-10-09T06:43:49Z
dc.date.issued2014-04-25
dc.identifier.citationYuan, X., Zhang, B., Luo, Z., Yao, Q., Leong, D.T., Yan, N., Xie, J. (2014-04-25). Balancing the rate of cluster growth and etching for gram-scale synthesis of thiolate-protected Au25 nanoclusters with atomic precision. Angewandte Chemie - International Edition 53 (18) : 4623-4627. ScholarBank@NUS Repository. https://doi.org/10.1002/anie.201311177
dc.identifier.issn15213773
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/88573
dc.description.abstractWe report a NaOH-mediated NaBH4 reduction method for the synthesis of mono-, bi-, and tri-thiolate-protected Au25 nanoclusters (NCs) with precise control of both the Au core and thiolate ligand surface. The key strategy is to use NaOH to tune the formation kinetics of Au NCs, i.e., reduce the reduction ability of NaBH4 and accelerate the etching ability of free thiolate ligands, leading to a well-balanced reversible reaction for rapid formation of thermodynamically favorable Au25 NCs. This protocol is facile, rapid (≤3 h), versatile (applicable for various thiolate ligands), and highly scalable (>1 g Au NCs). In addition, bi- and tri-thiolate-protected Au25 NCs with adjustable ratios of hetero-thiolate ligands were easily obtained. Such ligand precision in molecular ratios, spatial distribution and uniformity resulted in richly diverse surface landscapes on the Au NCs consisting of multiple functional groups such as carboxyl, amine, and hydroxy. Analysis based on NMR spectroscopy revealed that the hetero-ligands on the NCs are well distributed with no ligand segregation. The unprecedented synthesis of multi-thiolate-protected Au25 NCs may further promote the practical applications of functional metal NCs. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/anie.201311177
dc.sourceScopus
dc.subjectnanoparticles
dc.subjectnoble metal clusters
dc.subjectsurface chemistry
dc.subjectsynthesis (inorg.)
dc.subjectthiolate
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1002/anie.201311177
dc.description.sourcetitleAngewandte Chemie - International Edition
dc.description.volume53
dc.description.issue18
dc.description.page4623-4627
dc.description.codenACIEF
dc.identifier.isiut000334894100020
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