writer：Li, Z. X.; Zhang, L. F.; Li, X. Y.; Guo, Y. K.; Ni, Z. H.; Chen, J. H.; Wei, L. H.; Yu, M. M.*
keywords：photo-induced electron transfer，chemosensor
source：期刊
specific source：Dyes Pigments 2012, 94, 60–65
Issue time：2012年

A fluorescent color/intensity changed fluoranthene derivative chemosensor for Fe³⁺ has been prepared and confirmed by ¹H-NMR, ¹³C-NMR, HRMS, and crystal data, which displays a high selectivity and antidisturbance for Fe³⁺ among environmentally and biologically relevant metal ions. Fluorescence studies show that fluorescent emission peak blue shifts about 100 nm with fluorescent intensity enhancing 75-fold, indicating a Fe³⁺-selective dual-emission behavior. Further study demonstrates the detection limit on fluorescence response of the sensor to Fe³⁺ is down to 10^-7 M range. The fluorescence signals of chemosensor can be restored with o-phenanthroline, showing the binding of chemosensor and Fe³⁺ is really chemically reversible.