title: Photo-controlled metal-ion (Zn2+ and Cd2+) release in aqueous Tween-20 micelle solution.
abstract: Photo-controlled metal-ion (Zn(2+) and Cd(2+)) release in aqueous micelle solution (tris-HCl, pH = 7.4) has been described using 2-((2-mercaptophenylimino)methyl) phenol as ligand. It is found that both the ligand-Zn complex (1) and the ligand-Cd complex (2) are stable in micelle solution, and Zn(2+) (Cd(2+)) can be released from the complex with 365 nm light trigger. Accompanying the metal-ion release, the ligand is photo-converted to 2-(benzothiazol-2-yl) phenol (3) as product, and the turn-on fluorescence is detected. The fluorescence intensity increases with the photo-triggered release until Zn(2+) (Cd(2+)) is completely released, which is beneficial for monitoring the process of photo-controlled metal ion release. Control experiments demonstrate that no binding occurs between 3 and Zn(2+) (Cd(2+)) in micelle solution and there is no binding between cations and micelle, either.
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
mesh_terms: D002104:Cadmium / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D007700:Kinetics; D008024:Ligands; D008027:Light; D008823:Micelles; D011136:Polysorbates / Q000737:chemistry*; D014867:Water; D015032:Zinc / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D007477:Ions; D008024:Ligands; D008823:Micelles; D011136:Polysorbates; D002104:Cadmium; D014867:Water; D015032:Zinc