title: Building SERS-active heteroassemblies for ultrasensitive Bisphenol A detection.
abstract: 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 0.001-1ng/mL and the limit of detection was as low as 3.9pg/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.
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China. Electronic address: xuliguang2006@126.com.
authors.forename: Liguang
authors.initials: L
authors.lastname: Xu
authors.affiliation: Yancheng Teachers University, Yancheng JiangSu, 224051, PR China. Electronic address: cuigang@ycit.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Cui
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Hua
authors.initials: H
authors.lastname: Kuang
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Chuanlai
authors.initials: C
authors.lastname: Xu
mesh_terms: D052157:Aptamers, Nucleotide / Q000737:chemistry*; D015374:Biosensing Techniques / Q000379:methods*; D060766:Drinking Water / Q000032:analysis; D006046:Gold / Q000737:chemistry; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry / Q000648:ultrastructure; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D052157:Aptamers, Nucleotide; D060766:Drinking Water; D014874:Water Pollutants, Chemical; D006046:Gold
keywords: BPA detection; Gold nanoparticle-nanorod heteroassemblies; SERS