A highly selective and sensitive fluorescence probe with A-π-D-π-A structure for detection of Ag+

A triphenylamine derivative (IPTPA) was firstly synthesized with A-π-D-π-A structure. The fluorescence spectra showed that IPTPA is highly selective and sensitive to Ag+ with a lower detection limit of 3.97 nmoL/L. A 1:1 complex ratio of IPTPA-Ag (A-π-D-π-D) effectively increased the fluorescence. Moreover, the feasibility of IPTPA for detecting intracellular Ag+ was successfully realized by the fluorescence imaging experiments.196