Dalton Transactions (Print Edition) 2013-10-01

Fluorenylidene bridged cyclotriphosphazenes: 'turn-off' fluorescence probe for Cu(2+) and Fe(3+) ions.

Gönül Yenilmez Çiftçi, Elif Şenkuytu, Mahmut Durmuş, Fatma Yuksel, Adem Kiliç

Index: Dalton Trans. 42(41) , 14916-26, (2013)

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Abstract

A first series of the 4,4'-(9-fluorenylidene)diphenol (), () and 4,4'-(9-fluorenylidene)dianiline (), () bridged cyclotriphosphazene derivatives (, ) were synthesized by nucleophilic SN2(P) and SN1(P) reactions, respectively. The structural investigations of the compounds were verified by elemental analyses, mass spectrometry, UV-vis, FT-IR, (1)H and (31)P NMR techniques, X-ray crystallography (for , , ) and fluorescence spectroscopy. The metal sensing properties of novel bridged cyclotriphosphazene derivatives were also examined by fluorescence spectroscopy. These complexes showed high selectivity for Cu(2+) and Fe(3+) ions in solution.