Hybrid octahedral Au nanocrystals and Ag nanohole arrays as substrates for highly sensitive and reproducible surface-enhanced Raman scattering

doi:10.1039/c9tc05732c

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 微细加工光学技术国家重点实验室（开放室）

	Hybrid octahedral Au nanocrystals and Ag nanohole arrays as substrates for highly sensitive and reproducible surface-enhanced Raman scattering
	Gong, Tiancheng 3; Luo, Yunfei 1,3; Zhang, Haibin 1,2; Zhao, Chengwei 1,3; Yue, Weisheng 3; Pu, Mingbo 3; Kong, Weijie 3; Wang, Changtao 3; Luo, Xiangang 3
刊名	Journal of Materials Chemistry C
	2020-07-12
卷号	8 期号:3 页码:1135-1142
ISSN号	2050-7526
DOI	10.1039/c9tc05732c
文献子类	期刊论文
英文摘要	Surface enhanced Raman scattering (SERS) substrates with excellent enhancement and reproducibility have seen continuous research in recent years. Herein, we report a high performance hybrid SERS substrate which is composed of octahedral Au nanocrystals (AuNCs) and Ag nanohole (AgNH) arrays to achieve both high enhancement and reproducibility. The octahedral AuNCs were prepared by controllable chemical synthesis and the AgNHs over 5 × 5 mm2 in area were fabricated by a surface plasmon lithography (SPL) technique. The hybrid structure was prepared by self-assembly of the colloidal AuNCs onto the AgNHs. The SERS substrate shows an enhancement factor (EF) of 3.6 × 106, which is much higher than that of either the AuNCs or AgNHs. The high SERS enhancement is ascribed to the high-density hotspots with a 3-dimensional (3D) distribution and the effect of plasmonic coupling from these hybrid structures. In addition, the substrate shows excellent reproducibility and stability. The relative standard deviation (RSD) is less than 7% and the SERS intensity only decreases by 32% after 100 days of exposure to air. It is expected that the designed hybrid structure of AuNCs and AgNHs with excellent SERS performance is a potential candidate for applications, such as in food safety, disease diagnosis, environmental monitoring and other practical trace detection. This journal is © The Royal Society of Chemistry.
出版地	CAMBRIDGE
WOS关键词	GOLD NANOCRYSTALS ; SERS ; NANOPARTICLES ; PLASMONS ; SPECTROSCOPY ; NANOSPONGES ; SHELL
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000509343800035
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10074]
专题	光电技术研究所_微细加工光学技术国家重点实验室（开放室）
作者单位	1.University of Chinese Academy of Sciences, Beijing; 100049, China; 2.Lightweight Optics and Advanced Materials Center, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu; 610209, China 3.State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu; 610209, China;
推荐引用方式 GB/T 7714	Gong, Tiancheng,Luo, Yunfei,Zhang, Haibin,et al. Hybrid octahedral Au nanocrystals and Ag nanohole arrays as substrates for highly sensitive and reproducible surface-enhanced Raman scattering[J]. Journal of Materials Chemistry C,2020,8(3):1135-1142.
APA	Gong, Tiancheng.,Luo, Yunfei.,Zhang, Haibin.,Zhao, Chengwei.,Yue, Weisheng.,...&Luo, Xiangang.(2020).Hybrid octahedral Au nanocrystals and Ag nanohole arrays as substrates for highly sensitive and reproducible surface-enhanced Raman scattering.Journal of Materials Chemistry C,8(3),1135-1142.
MLA	Gong, Tiancheng,et al."Hybrid octahedral Au nanocrystals and Ag nanohole arrays as substrates for highly sensitive and reproducible surface-enhanced Raman scattering".Journal of Materials Chemistry C 8.3(2020):1135-1142.