摘要
A spiropyran-based probe was developed.It serves as a fluorescence turn-on probe for selective detection of Ce^3+in both ethanol and aqueous(water/ethanol,1:9 or 9:1,v/v)media.Ce3+can induce photochromism of the probe though the probe exhibits negligible photochromic property by itself.The probe is sensitive to Ce3+and the detection limit reaches 1.7μmol/L.It exhibits a high selectivity for Ce^3+ion over other common metal cations including Li^+,Na^+,Ag^+,Sr^2+,Ni^2+,Co^2+,Hg^2+,Zn^2+,Cr^3+,Al^3+,Fe^3+and Bi^3+and lanthanide ions Nd^3+,Yb^3+and La^3+.The probe may be used for quantitative determination of the concentration of Ce3+ion in a range of 1-10μmol/L and for application to environmental water samples.Sensing mechanism of the probe towards Ce3+ion is proposed.
A spiropyran-based probe was developed.It serves as a fluorescence turn-on probe for selective detection of Ce3+ in both ethanol and aqueous（water/ethanol,1:9 or 9:1,v/v） media.Ce3+ can induce photochromism of the probe though the probe exhibits negligible photochromic property by itself.The probe is sensitive to Ce3+ and the detection limit reaches 1.7 μmol/L.It exhibits a high selectivity for Ce3+ion over other common metal cations including Li+,Na+,Ag+,Sr2+,Ni2+,Co2+,Hg2+,Zn2+,Cr3+,Al3+,Fe3+ and Bi3+ and lanthanide ions Nd3+,Yb3+ and La3+.The probe may be used for quantitative determination of the concentration of Ce3+ ion in a range of 1-10 μmol/L and for application to environmental water samples.Sensing mechanism of the probe towards Ce3+ ion is proposed.
作者简介
Corresponding author:Hongqi Li,Fax:+862167792608.E-mail address:hongqili@dhu.edu.cn
