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题名: Engineering Gold Nanorod-Copper Sulfide Heterostructures with Enhanced Photothermal Conversion Efficiency and Photostability
作者: Leng, CB;  Zhang, X;  Xu, FX;  Yuan, Y;  Pei, H;  Sun, ZH;  Li, L;  Bao, ZH
发表日期: 2018-3-22
摘要: Plasmonic gold nanorods (Au NRs)-copper sulfide heterostructures have recently attracted much attention owing to the synergistically enhanced photothermal properties. However, the facile synthesis and interface tailoring of Au NRs-copper sulfide heterostructures remain a formidable challenge. In this study, the rational design and synthesis of Au NRs-Cu7S4 heterostructures via a one-pot hydrothermal process is reported. Specifically, core-shell and dumbbell-like Au NRs-Cu7S4 heterostructures are obtained with well-controlled interfaces by employing the Au NRs with different aspect ratios. Both core-shell and dumbbell-like Au NRs-Cu7S4 have proven effective as photothermal therapy agents, which offer both high photothermal stability and significant photothermal conversion efficiency up to 62%. The finite-difference time domain simulation results confirm the coupling effect that leads to the enhanced local field as well as the optical absorption at the heterostructure interface. Importantly, these Au NRs-Cu7S4 heterostructures can be compatibly used as an 808 nm laser-driven photothermal therapy agents for the efficient photothermal therapy of cancer cells in vitro. This study will provide new insight into the design of other noble metal-semiconductor heterostructures for a broad range of applications utilizing surface plasmon resonance enhancement phenomena.
刊名: SMALL
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Leng, CB,Zhang, X,Xu, FX,et al. Engineering Gold Nanorod-copper Sulfide Heterostructures With Enhanced Photothermal Conversion Efficiency And Photostability[J]. Small,2018,14(12):-.

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