A novel colorimetric chemosensor for Cu2+ with high selectivity and sensitivity based on Rhodamine B

A novel colorimetric chemosensor for Cu2+ with high selectivity and sensitivity based on Rhodamine B 9-formyl-8-hydroxy-2,3,6,7-tetrahydro-1H, 5H-benzo[ij]-quinolizine rhodamine B hydrazone (FHQRH), a novel colorimetric chemosensor for Cu2+, was synthesized by a three-step synthetic route. It was found that FHQRH showed a high selectivity for Cu2+ ions and excellent anti-interference capability toward other metal ions. The FHQRH solution exhibited a visual color change after the addition of Cu2+, owing to the open spirocyclic structure via coordination with Cu2+. The complexation coefficient of FHQRH toward Cu2+ was measured to be 1:1. Furthermore, this Cu2+ chemosensor has a remarkable low detection limit of 0.45 μM, which is 2 % of the toxic level (20 μM) in drinking water as defined by the US Environment Protection Agency (EPA). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

A novel colorimetric chemosensor for Cu2+ with high selectivity and sensitivity based on Rhodamine B

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2024-3
Publisher site
See Article on Publisher Site

Abstract

9-formyl-8-hydroxy-2,3,6,7-tetrahydro-1H, 5H-benzo[ij]-quinolizine rhodamine B hydrazone (FHQRH), a novel colorimetric chemosensor for Cu2+, was synthesized by a three-step synthetic route. It was found that FHQRH showed a high selectivity for Cu2+ ions and excellent anti-interference capability toward other metal ions. The FHQRH solution exhibited a visual color change after the addition of Cu2+, owing to the open spirocyclic structure via coordination with Cu2+. The complexation coefficient of FHQRH toward Cu2+ was measured to be 1:1. Furthermore, this Cu2+ chemosensor has a remarkable low detection limit of 0.45 μM, which is 2 % of the toxic level (20 μM) in drinking water as defined by the US Environment Protection Agency (EPA).

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Apr 14, 2015

References

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