title: Functionalized gold nanoparticles as nanosensor for sensitive and selective detection of silver ions and silver nanoparticles by surface-enhanced Raman scattering.
abstract: We have developed a surface-enhanced Raman scattering (SERS) nanosensor firstly for Ag ions and Ag nanoparticles detection based on 2-mercaptoisonicotinic acid (2MNA)-functionalized Au nanoparticles. Ag(+) can coordinate with 2MNA resutling in a variation of its SERS spectrum, which is used as a criterion to determine Ag(+) in a solution. This sensor exhibits a detection limit no more than 25 nM and has a high selectivity against other metal ions. More importantly, it can be directly applied in real sample detection.
authors: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, PR China.
authors: Enzhong
authors: E
authors: Tan
authors: Penggang
authors: P
authors: Yin
authors: Xiufeng
authors: X
authors: Lang
authors: Xiao
authors: X
authors: Wang
authors: Tingting
authors: T
authors: You
authors: Lin
authors: L
authors: Guo
mesh_terms: D006046:Gold / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008670:Metals / Q000737:chemistry; D036103:Nanotechnology; D009539:Nicotinic Acids / Q000737:chemistry; D010084:Oxidation-Reduction; D012834:Silver / Q000032:analysis*; D013059:Spectrum Analysis, Raman
chemical_list: D007477:Ions; D008670:Metals; D009539:Nicotinic Acids; D012834:Silver; D006046:Gold