Figure 4
From: A Cu2+ion-selective fluoroionophore with dual off/on switches
Fluorescence emission changes of derivative 3 ( c = 1 × 10-5 M) upon addition of metal ions K+, Cr3+, Co2+, Ni2+, Cu2+, Zn2+, Ag+ (1 equiv) in CH 3 CN/CHCl 3 (9:1, v/v). Excitation wavelength was 344 nm.