writer：Jiaming Chen, Youju Huang, Palanisamy Kannan, Zhenyu Lin, Jiawei Zhang, Longhua Guo*, Tao Chen*
keywords：Flexible SERS Substrate; Au NPs; Adhesive Tape; Pesticide Residues; SERS Analysis
source：期刊
specific source：Analytical Chemistry, 2016, 88, 2149-2155
Issue time：2016年
The efficient extraction of targets from complex surfaces is vital for technological applications ranging from environmental pollutant monitoring to analysis of explosive traces and pesticide residues. In our present study, we proposed a proof-of-concept surface enhance Raman scattering (SERS) active substrate serving directly to the rapid extraction and detection of target molecules. The novel substrate was constructed by decorating the commercial tape with colloidal gold nanoparticles (Au NPs), which simultaneously provides SERS activity and “sticky” of adhesive. The utility of SERS tape was demonstrated by direct extracting pesticide residues in fruits and vegetables via a simple and viable “paste and peel off” approach. The obtained strong and easily distinguishable SERS signals allow us to detect various pesticide residues such as parathion-methyl, thiram and chlorpyrifos in the real samples with complex surfaces including green vegetable, cucumber, orange and apple.