Trace detection of tetrabromobisphenol A by SERS with DMAP-modified magnetic gold nanoclusters
作者： Naveen Reddy Kadasala , Alexander Wei
DOI: 10.1039/C4NR07658C
关键词: Nanoclusters 、 Analyte 、 Analytical chemistry 、 Chemistry 、 Spectroscopy 、 Nuclear chemistry 、 Detection limit 、 Raman spectroscopy 、 Tetrabromobisphenol A 、 Aqueous solution 、 Raman scattering
摘要: Magnetic gold nanoclusters (MGNCs) functionalized with 4-dimethylaminopyridine (DMAP) enables the trace detection of tetrabromobisphenol A (TBBPA), an environmental pollutant, using surface-enhanced Raman scattering (SERS) spectroscopy. The synthesis, cleansing, and functionalization MGNCs are conducted in aqueous solutions; SERS samples prepared by magnetic precipitation presence analyte. limit (LOD) for TBBPA is greatly increased use DMAP as a reporter molecule: DMAP-modified can detect at 10 pM water, whereas LOD unfunctionalized Au 1 nM. reproducibility picomolar confirmed two-dimensional correlation analysis. high sensitivity be attributed to its capacity modulate spectrum adsorbed DMAP. This indirect mode also applied toward other hydrophobic analytes, each identifiable characteristic identity.
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