title: An efficient ruthenium tris(bipyridine)-based luminescent chemosensor for recognition of Cu(II) and sulfide anion in water.
abstract: A novel efficient luminescent chemosensor based on a 1,4,7,10-tetraazacyclododecane (cyclen)-tethered Ru(bpy)3(2+) derivative (Ru-cyclen) has been synthesized and characterized. It displays an ON-OFF-type luminescence change with excellent selectivity towards Cu(II) amongst 16 metal ions in 100% aqueous solution. The binding stoichiometry of Ru-cyclen with Cu(2+) was established by Job plot analysis and mass spectral evidence. Furthermore, the in situ generated Ru-cyclen-Cu ensemble recovered luminescence in the presence of S(2-), indicating an 'OFF-ON'-type sensing process. Similar phenomena were not observed with other common anions and biothiols, making it a high selective sulfide probe. Finally, the sensing mechanism is confirmed to be displacement approach by NMR, mass and emission spectrometry.
authors.affiliation: School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China. minnali78@126.com
authors.forename: Minna
authors.initials: M
authors.lastname: Li
authors.forename: Qichao
authors.initials: Q
authors.lastname: Liang
authors.forename: Meiqing
authors.initials: M
authors.lastname: Zheng
authors.forename: Chenjie
authors.initials: C
authors.lastname: Fang
authors.forename: Shiqi
authors.initials: S
authors.lastname: Peng
authors.forename: Ming
authors.initials: M
authors.lastname: Zhao
mesh_terms: D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D000838:Anions / Q000032:analysis; D056831:Coordination Complexes; D003300:Copper / Q000032:analysis*; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008163:Luminescent Measurements; D015394:Molecular Structure; D013440:Sulfides / Q000032:analysis*; D014867:Water / Q000737:chemistry; D017975:Ruthenium Compounds
chemical_list: D015082:2,2'-Dipyridyl; D000838:Anions; D056831:Coordination Complexes; D003300:Copper; D049408:Luminescent Agents; D013440:Sulfides; D014867:Water; C547232:tris(2,2-bipyridine)-ruthenium(II); D017975:Ruthenium Compounds