A Highly Selective Fluorescent Probe for Zn2+ Based on a Rhodamine-6G dye Derivative Modified by a Furan Unit. (April 2018) - Qiao, Rui
A fluorescent probe for Zn 2+ based on rhodamine-6G has been synthesised. It showed excellent fluorescent specific selectivity and high sensitivity for Zn 2+ compared with other metal ions, such as Fe 3+, Cr 3+, Hg 2+, Ag +, Ca 2+, Cu 2+, Pb 2+, Cd 2+, Ni 2+, Co 2+ and Mg 2+, in CH3 CN–phosphate buffer saline solution. The distinct colour change and the rapid emergence of fluorescence emission provided 'naked-eye' detection of Zn 2+ . The detection limit of the fluorescent probe towards Zn 2+ was 1.78 μM. In addition, the fluorescence lifetime and fluorescence quantum yield were measured.