title: Ratiometric and selective fluorescent sensor for CuII based on internal charge transfer (ICT).
abstract: A Cu(II)-sensing, ratiometric, and selective fluorescent sensor 1, N-butyl-4,5-di[(pyridin-2-ylmethyl)amino]-1,8-naphthalimide, was designed and synthesized on the basis of the mechanism of internal charge transfer (ICT). In aqueous ethanol solutions of 1, the presence of Cu(II) induces the formation of a 1:1 metal-ligand complex, which exhibits a strong, increasing fluorescent emission centered at 475 nm at the expense of the fluorescent emission of 1 centered at 525 nm. [structure: see text]
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China.
authors.forename: Zhaochao
authors.initials: Z
authors.lastname: Xu
authors.forename: Yi
authors.initials: Y
authors.lastname: Xiao
authors.forename: Xuhong
authors.initials: X
authors.lastname: Qian
authors.forename: Jingnan
authors.initials: J
authors.lastname: Cui
authors.forename: Dawei
authors.initials: D
authors.lastname: Cui