title: Highly specific colorimetric recognition and sensing of sulfide with glutathione-modified gold nanoparticle probe based on an anion-for-molecule ligand exchange reaction.
abstract: Colorimetric recognition and sensing of sulfide with high selectivity by virtue of glutathione-modified gold nanoparticle (GSH-AuNP) is presented. The assay is developed based on a specific anion-for-molecule ligand exchange reaction, through which sulfide replaces glutathione self-assembled on the AuNP. The unique feature of the GSH-AuNP probe makes it a novel colorimetric sensor for sulfide.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
authors.forename: Jia
authors.initials: J
authors.lastname: Zhang
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Xu
authors.forename: Xiurong
authors.initials: X
authors.lastname: Yang
mesh_terms: D000838:Anions; D001681:Biological Assay; D003124:Colorimetry / Q000379:methods*; D005978:Glutathione / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008024:Ligands; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D008958:Models, Molecular; D013440:Sulfides / Q000032:analysis* / Q000737:chemistry
chemical_list: D000838:Anions; D008024:Ligands; D013440:Sulfides; D006046:Gold; D005978:Glutathione