A ratiometric fluorescent sensor for phosphates: Zn2+-enhanced ICT and ligand competition.
A pyrene-terpyridine-Zn conjugate has been synthesized and characterized, where Zn2+ acts as an electron acceptor to enhance molecular ICT with a large emission red-shift (>100 nm). It showed a ratiometric fluorescence change upon addition of phosphate anions in buffered aqueous solution. The selective response to phosphates or pyrophosphates involved ICT and ligand competition processes.
Peng
Xiaojun
X
State Key Laboratory of Fine Chemicals, Dalian University of Technology, 158 Zhongshan Road, Dalian, 116012, PR China. pengxj@dlut.edu.cn
Xu
Yongqian
Y
Sun
Shiguo
S
Wu
Yunkou
Y
Fan
Jiangli
J