Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12164/119
Title: Reversible Modulation of Surface Plasmons in Gold Nanoparticles Enabled by Surface Redox Chemistry
Authors: Li, Zheng
Foley, Jonathan J., IV
Peng, Sheng
Sun, Cheng-Jun
Ren, Yang
Weidderecht, Gary P.
Gray, Stephen K.
Sun, Yugang
Issue Date: 11-Jun-2015
Publisher: Wiley
Gesellschaft Deutscher Chemiker (GDCh)
Rights: © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
http://rightsstatements.org/vocab/InC/1.0/
URI: http://hdl.handle.net/20.500.12164/119
https://doi.org/10.1002/anie.201502012
Type: preprint
Citation: Li, Z., Foley, J. J., Peng, S., Sun, C.-J., Ren, Y., Wiederrecht, G. P., Gray, S. K., Sun, Y. (2015). Reversible Modulation of Surface Plasmons in Gold Nanoparticles Enabled by Surface Redox Chemistry. Angewandte Chemie, 127(31), 9076–9079.
Abstract: Switchable surface redox chemistry is demonstrated in gold@iron/iron oxide core–shell nanoparticles with ambient oxidation and plasmon-mediated reduction to modulate the oxidation state of shell layers. The iron shell can be oxidized to iron oxide through ambient oxidation, leading to an enhance- ment and red-shift of the gold surface plasmon resonance (SPR). This enhanced gold SPR can drive reduction of the iron oxide shell under broadband illumination to reversibly blue- shift and significantly dampen gold SPR absorption. The observed phenomena provide a unique mechanism for con- trolling the plasmonic properties and surface chemistry of small metal nanoparticles.
Description: This is the peer reviewed version of the following article: “Reversible modulation of surface plasmons in gold nanoparticles enabled by surface redox chemistry” Z. Li*, J. J. Foley IV*, S. Peng, C.-J. Sun, Y. Ren, G. P. Wiederrecht, S. K. Gray, Y. Sun, Angew. Chemie 127, 9076-9079 (2015), which has been published in final form at https://doi.org/10.1002/anie.201502012. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Subject: core-shell nanoparticles
gold nanocrystals
iron
surface plasmon resonance
surface redox chemistry
Appears in Collections:Chemistry Department
Faculty Collection

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