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. 2017 Dec;32(8):1426-1430.
doi: 10.1002/bio.3341. Epub 2017 Jun 5.

A new Schiff base as a turn-off fluorescent sensor for Cu2+ and its photophysical properties

Pritam Torawane  1 , Suban K Sahoo  2 , Amulrao Borse  1 , Anil Kuwar  1
Affiliations

A new Schiff base as a turn-off fluorescent sensor for Cu2+ and its photophysical properties

Pritam Torawane et al. Luminescence. 2017 Dec.

Abstract

A new Schiff base receptor 1 was synthesized and its photophysical properties were investigated by absorption, emission and excitation techniques. Furthermore, its chromogenic and fluorogenic sensing abilities towards various metal ions were examined. Receptor 1 selectively detects Cu2+ ion through fluorescence quenching and detection was not inhibited in the presence of other metal ions. From fluorescence titration, the limit of detection of receptor 1 as a fluorescent 'turn-off' sensor for the analysis of Cu2+ was estimated to be 0.35 μM.

Keywords: Cu2+; Schiff base; fluorescent sensor; turn-off.

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