Highly selective fluorescence sensors for the fluoride anion based on carboxylate-bridged diiron complexes
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论文类型：期刊论文
发表时间：2016-04-28
发表刊物：DALTON TRANSACTIONS
收录刊物：PubMed、EI、SCIE
卷号：45
期号：16
页面范围：6839-6846
ISSN号：1477-9226
摘要：A new ligand bearing anthracene and its Fe(III) and Ru(III) derivatives have been synthesized and characterized exactly. The studies show that these dinuclear metal complexes serve as candidates of fluorescence chemosensors for anions. The interactions between these complexes and anions have been investigated by means of UV-Vis absorption spectra, fluorescence spectra, titration studies and H-1-NMR. The results illustrated that two diiron complexes, [Cp*Fe(mu-SR)(2)(mu-eta(2)-L)FeCp*][PF6] (5a, R = Me; 5b, R = Et; L = 4-(3-(anthracen-9-ylmethyl)ureido) benzoate), showed rapid and selective recognition for the fluoride ion over other anions with strong enhancement of emission intensities. The sensing mechanisms indicate that the hydrogen bonding interaction has been observed between chemosensors and F-.