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Title: Gold coating of silver nanoprisms
Authors: Saadat, Somaye
Martinsson, Erik
Aili, Daniel
Tay, Yee Yan
Bo, Liedberg
Loo, Say Chye Joachim
Zhang, Hua
Boey, Freddy Yin Chiang
Xue, Can
Shahjamali, Mohammad Mehdi
Bosman, Michel
Cao, Shao-Wen
Huang, Xiao
Issue Date: 2012
Source: Shahjamali, M. M., Bosman, M., Cao, S.-W., Huang, X., Saadat, S., Martinsson, E., et al. (2012). Gold coating of silver nanoprisms. Advanced functional materials, 22(4), 849-854.
Series/Report no.: Advanced functional materials
Abstract: Core–shell Ag@Au nanoprisms are prepared through a surfactant-free seed-mediated approach by taking advantage of the anisotropic structure of silver nanoprisms as seeds. The gold coating on the silver nanoprism surface is achieved by using hydroxylamine as a mild reducing agent, and the final fully gold-coated prism structures are confirmed by microscopic and spectroscopic characterization. The resulting Ag@Au core–shell structure preserves the optical signatures of nanoprisms and offers versatile functionality and particularly better stability against oxidation than the bare silver nanoprism. The surface plasmon resonances of the core–shell Ag@Au nanoprisms can be tuned throughout the visible and near-IR range as a function of the Au shell thickness. Such tailorable optical features and surfactant-free gold shells have great potential applications in biosensing and bioimaging.
ISSN: 1616-3028
DOI: 10.1002/adfm.201102028
Rights: © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles


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