Electronically coupled hybrid structures by graphene oxide directed self-assembly of Cu(2-x)S nanocrystals

Nanoscale
Shany NeyshtadtEnrico da Como

Abstract

Here, we describe an electronically coupled hybrid material consisting of graphene oxide (GO) flakes and inorganic Cu(2-x)S nanocrystals (NCs) formed via a self-assembly route. As a result of the amphiphilic nature of the water-dispersible GO flakes, the hydrophobic Cu(2-x)S NCs self-assemble in between the GO flakes, resulting in a large-interface hybrid structure with ordered close-packed NCs. We demonstrate that the optical properties of the hybrid GO/Cu(2-x)S structures are governed by the injection of electrons from the GO flakes to the valence band of the vacancy-doped plasmonic Cu(2-x)S NCs. This leads to a suppression of the plasmon band of the Cu(2-x)S NCs and to a softening of the Raman G-band of the GO flakes. Our results indicate that graphene derivatives can act not only as a self-assembly directing template, but also as a tool to affect the optical properties of self-assembled NCs in a chemical process, enhanced by the high interface area of the composite.

References

Dec 25, 2007·Nano Letters·Konstantin N KudinRoberto Car
Jul 25, 2008·Nano Letters·Yue WuA Paul Alivisatos
Mar 10, 2009·Journal of the American Chemical Society·Yixin ZhaoClemens Burda
Dec 31, 2009·Nano Letters·Xi LingZhongfan Liu
Jun 10, 2010·Journal of the American Chemical Society·Jaemyung KimJiaxing Huang
Aug 14, 2010·Advanced Materials·Yanwu ZhuRodney S Ruoff
Feb 10, 2011·Journal of the American Chemical Society·Rong KouJun Liu
Mar 9, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Barun DasC N R Rao
Apr 12, 2011·Nature Materials·Joseph M LutherA Paul Alivisatos
Jul 7, 2011·Journal of the American Chemical Society·Dirk DorfsLiberato Manna
Jul 21, 2011·Nano Letters·Jong Min YukAlex Zettl
Sep 24, 2011·Nano Letters·Francesco ScotognellaFrancesco Tassone
Oct 14, 2011·Physical Chemistry Chemical Physics : PCCP·Zhaoyao ZhanQing Zhang
Dec 14, 2011·Journal of the American Chemical Society·Ilka KriegelJochen Feldmann
Feb 18, 2012·Nano Letters·Elizabeth S ThrallLouis E Brus
Oct 17, 2013·Journal of the American Chemical Society·Yi XieLiberato Manna
Oct 28, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Wen Long LiCheng Zhi Huang

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Citations

Sep 4, 2015·Journal of the American Chemical Society·Madathumpady Abubaker Habeeb MuhammedJessica Rodríguez-Fernández
Jun 5, 2018·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Yingying LiQuquan Wang
Jul 31, 2021·Environmental Pollution·Shikha BhogalAshok Kumar Malik

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