Issue 15, 2015

Multiple target chemosensor: a fluorescent sensor for Zn(ii) and Al(iii) and a chromogenic sensor for Fe(ii) and Fe(iii)

Abstract

A multifunctional fluorescent and colorimetric chemosensor 1, based on two julolidine moieties as a binding and signaling unit, has been synthesized in a one-step procedure. Receptor 1 showed prompt responses toward Zn2+ and Al3+ ions through selective fluorescence enhancement in dimethylformamide (DMF), while the presence of 5% water made 1 detect only Zn2+. Moreover, with 1 the “naked eye” could sense iron by a clear color change. Upon the addition of Fe2+ and Fe3+ into each solution of 1, the color of the solutions changed from pale yellow to dark green for both Fe2+ and Fe3+. The binding modes of the complexes were determined to be a 1 : 1 complexation stoichiometry from a Job plot, 1H NMR titration and ESI-mass spectrometry analysis.

Graphical abstract: Multiple target chemosensor: a fluorescent sensor for Zn(ii) and Al(iii) and a chromogenic sensor for Fe(ii) and Fe(iii)

Supplementary files

Article information

Article type
Paper
Submitted
28 ⴽⵜⵓ 2014
Accepted
05 ⵉⵏⵏ 2015
First published
05 ⵉⵏⵏ 2015

RSC Adv., 2015,5, 11229-11239

Author version available

Multiple target chemosensor: a fluorescent sensor for Zn(II) and Al(III) and a chromogenic sensor for Fe(II) and Fe(III)

Y. S. Kim, G. J. Park, J. J. Lee, S. Y. Lee, S. Y. Lee and C. Kim, RSC Adv., 2015, 5, 11229 DOI: 10.1039/C4RA13291B

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