A highly selective pyridoxal-based chemosensor for the detection of Zn(<scp>ii</scp>) and application in live-cell imaging; X-ray crystallography of pyridoxal-TRIS Schiff-base Zn(<scp>ii</scp>) and Cu(<scp>ii</scp>) complexes
Anwar Hussain, Kadarkaraisamy Mariappan, Dawson C. Cork, Luke Lewandowski, Prem Kumar Shrestha, Samiksha Giri, Xuejun Wang, Andrew G. Sykes
Abstract
Zn complex, with Zn(ii) ion binding with an octahedral coordination geometry. We also synthesized the copper(ii) complex of the ligand, and the crystal structure showed the formation of a 1 : 1 adduct, revealing 1-dimensional polymeric networks with octahedral coordinated Cu(ii). The ligand was employed as a sensor to detect zinc ion in HEK293 cell lines derived from human embryonic kidney cells grown in tissue culture which showed strong luminescence in the presence of Zn(ii). We believe that the outstanding turn-on response, sensitivity, selectivity, lower detection limit, and reversibility toward zinc ion will find further application in chemical and biological science.