Portal de Periódicos da CAPES

Ratiometric and Selective Fluorescent Sensor for Cu II Based on Internal Charge Transfer (ICT)

2005; American Chemical Society; Volume: 7; Issue: 5 Linguagem: Inglês

10.1021/ol0473445

1523-7060

Zhaochao Xu, Yi Xiao, Xuhong Qian, Jingnan Cui, Dawei Cui,

Electrochemical Analysis and Applications

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]