Building SERS-active heteroassemblies for ultrasensitive Bisphenol A detection

被引：67
作者：
Feng, Jingjing [1 ,2 ]
Xu, Liguang [1 ,2 ]
Cui, Gang [3 ]
Wu, Xiaoling [1 ,2 ]
Ma, Wei [1 ,2 ]
Kuang, Hua [1 ,2 ]
Xu, Chuanlai [1 ,2 ]
机构：
[1] Jiangnan Univ, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
[2] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
[3] Yancheng Teachers Univ, Yancheng 224051, Jiangsu, Peoples R China
来源：
BIOSENSORS & BIOELECTRONICS | 2016年 / 81卷
基金：
中国国家自然科学基金;
关键词：
Gold nanoparticle-nanorod heteroassemblies; SERS; BPA detection; ENHANCED RAMAN-SCATTERING; GOLD NANOPARTICLES; BPA; EXPOSURE; NANOSTRUCTURES; APTASENSOR; CHIRALITY; DIMERS; URINE; FOOD;
D O I：
10.1016/j.bios.2016.02.055
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Bisphenol A (BPA) usually exists in daily plastic products, as one of the most important endocrine disrupting chemicals. A sensitive surface-enhanced Raman scattering (SERS)-encoded aptasensor for the detection of BPA was developed, for the first time, based on gold nanoparticle-nanorod heteroassemblies. The high electromagnetic enhancement in narrow gaps between metal nanoparticles of these heteroassemblies led to marked Raman signals. It was found that the assembly degree and the corresponding SERS signals were in inverse correlation to the BPA concentrations over a wide linear range of 0.001-1 ng/mL and the limit of detection was as low as 3.9 pg/mL. Excellent recovery ranging from 91% to 95.3% was obtained to assess the feasibility of this method for real sample detection, indicating promising application for the detection of BPA. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：138 / 142
页数：5
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