A novel ratiometric fluorescent sensor based on terpyridine derivatives for Zn 2+ in aqueous solution

Qinghong Bai, Yangming Jiang, Enming Hu, Libin Lv, Chenghui Wang, Xin Xiao Schematic representation of zinc ion binding to terpyridine probe producing solution color change from blue to yellowWe designed and synthesized a new fluorescent probe G based on 4-bromobenzaldehyde, CH3I and 4-vinylpyridine. Probe G formed a 1 : 1 complex with Zn2+ that produced a large fluorescence enhancement and a red shift of ~95 nm. Under ultraviolet light, on addition of Zn2+, the fluorescent color of probe G changed from blue to yellow. The tripyridine derivative probe G can quickly detect and identify zinc ions with high selectivity and a low detection limit in aqueous solution. (Image credit: Qinghong Bai.)
Source: Australian Journal of Chemistry - Category: Chemistry Authors: Source Type: research