Surface-Enhanced Raman Spectroscopy on Self-Assembled Au Nanoparticles Arrays for Pesticides Residues Multiplex Detection under Complex Environment

doi:10.3390/nano9030426

	Surface-Enhanced Raman Spectroscopy on Self-Assembled Au Nanoparticles Arrays for Pesticides Residues Multiplex Detection under Complex Environment
	Ma, Yongmei1 ; Huang, Zhonghao 2; Li, Siyue1 ; Zhao, Chenghao 3
刊名	NANOMATERIALS
	2019-03-13
卷号	9 期号:3 页码:11
关键词	self-assembly SERS pesticides residues multiplex
ISSN号	2079-4991
DOI	10.3390/nano9030426
通讯作者	Li, Siyue(syli2006@163.com)
英文摘要	The high reproducibility of trace detection in complex systems is very hard but crucial to analytical technology and science. Here, we present a surface-enhanced Raman scattering (SERS) platform made by large-scale self-assembly of Au nanoparticle (NP) arrays at the cyclohexane/water interface and its use for pesticides residues trace detection. The analyte molecules spontaneously localize into the Au NPs' nanogaps during the self-assembly process, yielding excellent Raman signal enhancement by surface effects, and possibly both by the concentration of the analytes into the array and by plasmonic hot-spot formation. Transmission electron microscopy (TEM) images demonstrate a good uniformity of interparticle distances (2-3 nm) in the Au NP arrays. SERS experiments on crystal violet (CV) molecules demonstrated that the relative standard deviations (RSD) of the band intensities at 1173, 1376, and 1618 cm(-1) were 6.3%, 6.4%, and 6.9%, respectively, indicating high reproducibility of the substrate. Furthermore, we demonstrate that two pesticides dissolved in organic and aqueous phases could be simultaneously detected, suggesting an excellent selectivity and universality of this method for multiplex detection. Our SERS platform opens vast possibilities for repeatability and sensitivity detection of targets in various complex fields.
资助项目	West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China[21806164] ; Hundred-Talent Program of the Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000464430700001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/7740]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Li, Siyue
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chongqing BOE Optoelect Technol CO LTD, 7 Yunhan Ave, Chongqing 400714, Peoples R China 3.City Univ Hong Kong, Dept Mech Engn, Hong Kong 999077, Peoples R China
推荐引用方式 GB/T 7714	Ma, Yongmei,Huang, Zhonghao,Li, Siyue,et al. Surface-Enhanced Raman Spectroscopy on Self-Assembled Au Nanoparticles Arrays for Pesticides Residues Multiplex Detection under Complex Environment[J]. NANOMATERIALS,2019,9(3):11.
APA	Ma, Yongmei,Huang, Zhonghao,Li, Siyue,&Zhao, Chenghao.(2019).Surface-Enhanced Raman Spectroscopy on Self-Assembled Au Nanoparticles Arrays for Pesticides Residues Multiplex Detection under Complex Environment.NANOMATERIALS,9(3),11.
MLA	Ma, Yongmei,et al."Surface-Enhanced Raman Spectroscopy on Self-Assembled Au Nanoparticles Arrays for Pesticides Residues Multiplex Detection under Complex Environment".NANOMATERIALS 9.3(2019):11.