Controllable conversion of plasmonic Cu2-xS nanoparticles to Au2S by cation exchange and electron beam induced transformation of Cu2-xS-Au2S core/shell nanostructures

Xianliang Wang; Xin Liu; Dewei Zhu; Mark T. Swihart

doi:10.1039/c4nr02114b

Controllable conversion of plasmonic Cu_2-xS nanoparticles to Au₂S by cation exchange and electron beam induced transformation of Cu_2-xS-Au₂S core/shell nanostructures

Xianliang Wang
, Xin Liu
, Dewei Zhu
, Mark T. Swihart

Department of Chemical and Biological Engineering

SUNY Buffalo

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

44 Scopus citations

Abstract

Self-doped Cu_2-xS nanocrystals (NCs) were converted into monodisperse Cu_2-xS-Au₂S NCs of tunable composition, including pure Au₂S, by cation exchange. The near-infrared (NIR) localized surface plasmon resonance (LSPR) was dampened and red-shifted with increasing Au content. Cation exchange was accompanied by elimination of cation vacancies and a change in crystal structure. Partially exchanged Cu _2-xS-Au₂S core/shell structures evolved to dumbbell-like structures under electron irradiation in the transmission electron microscope (TEM). This journal is

Original language	English
Pages (from-to)	8852-8857
Number of pages	6
Journal	Nanoscale
Volume	6
Issue number	15
DOIs	https://doi.org/10.1039/c4nr02114b
State	Published - Aug 7 2014

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abstract = "Self-doped Cu2-xS nanocrystals (NCs) were converted into monodisperse Cu2-xS-Au2S NCs of tunable composition, including pure Au2S, by cation exchange. The near-infrared (NIR) localized surface plasmon resonance (LSPR) was dampened and red-shifted with increasing Au content. Cation exchange was accompanied by elimination of cation vacancies and a change in crystal structure. Partially exchanged Cu 2-xS-Au2S core/shell structures evolved to dumbbell-like structures under electron irradiation in the transmission electron microscope (TEM). This journal is",

author = "Xianliang Wang and Xin Liu and Dewei Zhu and Swihart, \{Mark T.\}",

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AU - Wang, Xianliang

AU - Liu, Xin

AU - Zhu, Dewei

AU - Swihart, Mark T.

PY - 2014/8/7

Y1 - 2014/8/7

N2 - Self-doped Cu2-xS nanocrystals (NCs) were converted into monodisperse Cu2-xS-Au2S NCs of tunable composition, including pure Au2S, by cation exchange. The near-infrared (NIR) localized surface plasmon resonance (LSPR) was dampened and red-shifted with increasing Au content. Cation exchange was accompanied by elimination of cation vacancies and a change in crystal structure. Partially exchanged Cu 2-xS-Au2S core/shell structures evolved to dumbbell-like structures under electron irradiation in the transmission electron microscope (TEM). This journal is

AB - Self-doped Cu2-xS nanocrystals (NCs) were converted into monodisperse Cu2-xS-Au2S NCs of tunable composition, including pure Au2S, by cation exchange. The near-infrared (NIR) localized surface plasmon resonance (LSPR) was dampened and red-shifted with increasing Au content. Cation exchange was accompanied by elimination of cation vacancies and a change in crystal structure. Partially exchanged Cu 2-xS-Au2S core/shell structures evolved to dumbbell-like structures under electron irradiation in the transmission electron microscope (TEM). This journal is

UR - https://www.scopus.com/pages/publications/84904312035

U2 - 10.1039/c4nr02114b

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JF - Nanoscale

IS - 15

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Controllable conversion of plasmonic Cu_2-xS nanoparticles to Au₂S by cation exchange and electron beam induced transformation of Cu_2-xS-Au₂S core/shell nanostructures

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