Zn2+-triggered excited-state intramolecular proton transfer: a sensitive probe with near-infrared emission from bis(benzoxazole) derivative
作者:Yongqian Xu、Yi Pang
DOI:10.1039/c0dt01376e
日期:——
Near-infrared (NIR) emission can offer distinct advantages for biological applications. A fluorescent sensor, Zinhbo-1, based on bis(benzoxazole) ligand with 2,2′-dipicolylamine (DPA) as receptor, was synthesized. In aqueous solution, Zinhbo-1 demonstrates high sensitivity and selectivity for sensing Zn2+ with about 10-fold enhancement and nanomolar sensitivity (Kd = 0.29 nM). Moreover, sensor Zinhbo-1