Ultrabright Luminescence from Gold Nanoclusters: Rigidifying the Au(I)–Thiolate Shell

Pyo, Kyunglim; Thanthirige, Viraj Dhanushka; Kwak, Kyuju; Pandurangan, Prabhu; Ramakrishna, G.; Lee, Dongil

doi:10.1021/jacs.5b04210

articleJournal of the American Chemical SocietyJun 11, 2015Closed access

Ultrabright Luminescence from Gold Nanoclusters: Rigidifying the Au(I)–Thiolate Shell

KPKyunglim Pyo VDViraj Dhanushka Thanthirige KKKyuju Kwak PPPrabhu Pandurangan GRG. Ramakrishna

Yonsei University · Western Michigan University

PubMed

Indexed incrossrefpubmed

Abstract

Luminescent nanomaterials have captured the imagination of scientists for a long time and offer great promise for applications in organic/inorganic light-emitting displays, optoelectronics, optical sensors, biomedical imaging, and diagnostics. Atomically precise gold clusters with well-defined core-shell structures present bright prospects to achieve high photoluminescence efficiencies. In this study, gold clusters with a luminescence quantum yield greater than 60% were synthesized based on the Au22(SG)18 cluster, where SG is glutathione, by rigidifying its gold shell with tetraoctylammonium (TOA) cations. Time-resolved and temperature-dependent optical measurements on Au22(SG)18 have shown the presence of…

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589

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FWCI: 21.90
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Topics & keywords

Topics

Keywords

Nanoclusters
Chemistry
Luminescence
Persistent luminescence
Nanotechnology
Shell (structure)
Photochemistry
Organic chemistry

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