A highly selective charge transfer fluoroionophore for Cu²⁺

Abstract

A dual fluorescent charge transfer fluoroionophore (1) with its ionophore incorporated in the electron acceptor was developed and was found to show a highly selective fluorescent response to Cu2+ with a dramatic enhancement in its CT emission.

A Novel Chemosensor Based on Rhodamine Derivative for Colorimetric and Fluorometric Detection of Cu2+ in Aqueous Solution

“…Rhodamine 6G reacted with hydrazine hydrate to give the intermediate 1, which was further treated with 4-(diethylamino) salicylaldehyde to afford chemosensor 2 in 66 % overall yield. All the compounds were confirmed by 1 H NMR, 13 C NMR spectra and MS data.…”

“…Considering the important roles of Cu 2+ in biological and environmental systems [6][7][8][9], a considerable effort has been devoted to the development of Cu 2+ -selective fluorescent chemosensors in the past few years [10]. However, in most cases fluorescence changes can only be observed in non-aqueous solvent [11][12][13], which greatly limits their analytical application in real samples. Therefore, the development of highly sensitive and selective fluorescent chemosensor for Cu 2+ in aqueous solution is imperative.…”

Highly selective detection of Hg2+ and MeHgI by di-pyridin-2-yl-[4-(2-pyridin-4-yl-vinyl)-phenyl]-amine and its zinc coordination polymer

“…[28][29][30][31][32][33][34][35] Although a variety of fluorescent ratiometric sensors for Cu 2+ , Fe 3+ , etc. have been documented, [36][37][38][39][40][41][42] only a few ratiometric Hg 2+ probes have been reported to date. [43][44][45][46] Therefore it remains a challenge to develop a highly effective fluorescent Hg 2+ sensor.…”

A Highly Selective and Sensitive Probe for Cu2+ Based on Rhodamine-Pyridazine Conjugate and its Application

“…Therefore, several fluorescent sensors for Cu 2+ have been synthesized and investigated [6][7][8][9][10]. However, in most cases which fluorescence changes can only be observed in non-aqueous solvent [11][12][13][14], there is still an intense demand for new efficient Cu 2+ optical chemosensors, especially those which can be applied in aqueous solution with high selectivity and sensitivity.…”