Highly selective fluorescent chemosensor for Fe3+ detection based on diaza-18-crown-6 ether appended with dual coumarins

A new fluorescent chemosensor based on diaza-18-crown-6 ether, which was appended with dual coumarins, exhibited high selectivity and anti-disturbance for Fe3+ among environmentally and biologically relevant metal cations. Fe3+ sensing was performed via the complexation of Fe3+ ions with the chemosensor. In addition, the detection limit of the fluorescence response of the sensor to Fe3+ was 0.31 mu M with a rapid response of less than 10 s. (C) 2014 Elsevier B.V. All rights reserved.