title: A rhodamine-based fluorescent probe for Cu(II) determination in aqueous solution.
abstract: An 'off-on' rhodamine-based fluorescence probe for the selective detection of Cu(II) has been designed, exploiting the guest-induced structure transform mechanism. This system shows a sharp Cu(II)-selective fluorescence enhancement response in an aqueous system under physiological pH, and possesses high selectivity against a background of environmentally and biologically relevant metal ions. Under optimum conditions, the fluorescence intensity enhancement of this system is linearly proportional to the Cu(II) concentration from 50 nM to 6.0 μM with a detection limit of 29 nM.
authors.affiliation: Department of Chemistry, Anhui Science and Technology University, Bengbu, Anhui, 233100, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Mao
authors.forename: Junhua
authors.initials: J
authors.lastname: Cheng
authors.forename: Xuchun
authors.initials: X
authors.lastname: Wang
authors.forename: Shui
authors.initials: S
authors.lastname: Wang
authors.forename: Nianshou
authors.initials: N
authors.lastname: Cheng
authors.forename: Junfeng
authors.initials: J
authors.lastname: Wang
mesh_terms: D003300:Copper / Q000032:analysis*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D012235:Rhodamines / Q000138:chemical synthesis / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D012996:Solutions; D014867:Water; D003300:Copper
keywords: Cu; fluorescence probe; rhodamine; solid-phase extraction