Conductive and SERS-active colloidal gold films spontaneously formed at a liquid/liquid interface

Xiuxiu Yin; Yossef Peretz; Pola G. Oppenheimer; Leila Zeiri; Alexandra Masarwa; Natalya Froumin; Raz Jelinek

doi:https://doi.org/10.1039/c6ra03403a

Conductive and SERS-active colloidal gold films spontaneously formed at a liquid/liquid interface

Xiuxiu Yin, Yossef Peretz, Pola G. Oppenheimer, Leila Zeiri, Alexandra Masarwa, Natalya Froumin, Raz Jelinek

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

We show that water-soluble gold thiocyanate salt [KAu(SCN)₄] spontaneously formed electrically-conductive and surface enhanced Raman scattering (SERS)-active films at the interface between water and pentane. Microscopy and spectroscopic analyses reveal that the films comprised of condensed Au nanoparticles, assembled via crystallization of KAu(SCN)₄ and self-reduction of the Au³⁺ ions by the thiocyanate ligands. Importantly, the pentane phase was crucial in promoting the crystallization/reduction reactions. The Au films exhibited useful applications, including excellent conductivity and SERS sensing. We also show that the new film self-assembly process could be readily harnessed for producing macro-scale Au patterns.

Original language	American English
Pages (from-to)	33326-33331
Number of pages	6
Journal	RSC Advances
Volume	6
Issue number	40
DOIs	https://doi.org/10.1039/c6ra03403a
State	Published - 1 Jan 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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title = "Conductive and SERS-active colloidal gold films spontaneously formed at a liquid/liquid interface",

abstract = "We show that water-soluble gold thiocyanate salt [KAu(SCN)4] spontaneously formed electrically-conductive and surface enhanced Raman scattering (SERS)-active films at the interface between water and pentane. Microscopy and spectroscopic analyses reveal that the films comprised of condensed Au nanoparticles, assembled via crystallization of KAu(SCN)4 and self-reduction of the Au3+ ions by the thiocyanate ligands. Importantly, the pentane phase was crucial in promoting the crystallization/reduction reactions. The Au films exhibited useful applications, including excellent conductivity and SERS sensing. We also show that the new film self-assembly process could be readily harnessed for producing macro-scale Au patterns.",

author = "Xiuxiu Yin and Yossef Peretz and Oppenheimer, {Pola G.} and Leila Zeiri and Alexandra Masarwa and Natalya Froumin and Raz Jelinek",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

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doi = "https://doi.org/10.1039/c6ra03403a",

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T1 - Conductive and SERS-active colloidal gold films spontaneously formed at a liquid/liquid interface

AU - Yin, Xiuxiu

AU - Peretz, Yossef

AU - Oppenheimer, Pola G.

AU - Zeiri, Leila

AU - Masarwa, Alexandra

AU - Froumin, Natalya

AU - Jelinek, Raz

PY - 2016/1/1

Y1 - 2016/1/1

N2 - We show that water-soluble gold thiocyanate salt [KAu(SCN)4] spontaneously formed electrically-conductive and surface enhanced Raman scattering (SERS)-active films at the interface between water and pentane. Microscopy and spectroscopic analyses reveal that the films comprised of condensed Au nanoparticles, assembled via crystallization of KAu(SCN)4 and self-reduction of the Au3+ ions by the thiocyanate ligands. Importantly, the pentane phase was crucial in promoting the crystallization/reduction reactions. The Au films exhibited useful applications, including excellent conductivity and SERS sensing. We also show that the new film self-assembly process could be readily harnessed for producing macro-scale Au patterns.

AB - We show that water-soluble gold thiocyanate salt [KAu(SCN)4] spontaneously formed electrically-conductive and surface enhanced Raman scattering (SERS)-active films at the interface between water and pentane. Microscopy and spectroscopic analyses reveal that the films comprised of condensed Au nanoparticles, assembled via crystallization of KAu(SCN)4 and self-reduction of the Au3+ ions by the thiocyanate ligands. Importantly, the pentane phase was crucial in promoting the crystallization/reduction reactions. The Au films exhibited useful applications, including excellent conductivity and SERS sensing. We also show that the new film self-assembly process could be readily harnessed for producing macro-scale Au patterns.

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DO - https://doi.org/10.1039/c6ra03403a

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JO - RSC Advances

JF - RSC Advances

IS - 40

ER -

Conductive and SERS-active colloidal gold films spontaneously formed at a liquid/liquid interface

Abstract

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