Journal
DYES AND PIGMENTS
Volume 86, Issue 1, Pages 50-55Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2009.11.007
Keywords
Rhodamine derivative; Cu2+; VO2+; UV-visible; Naked-eye; Fluorescent
Funding
- National Natural Science Foundation of China [20801032]
- Shanxi Provincial Natural Science Foundation [2009021006-2]
- Shanxi Province Foundation for Returneess [200815]
- Shanxi Provincial Foundation for Leaders of Disciplines in Science
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The optical properties of a novel, rhodamine-based derivative, synthesized by reacting rhodamine hydrazide and 5-chlorosalicylaldehyde in ethanol, were investigated in methanol:HEPES solution. The novel sensor displayed selectivity for Cu2+, as evidenced by a colourless to dark red colour change, which was characterized using UV-visible spectroscopy and which also allowed visual detection of Cu2+. In contrast, selectivity towards VO2+ was determined from changes in the emission spectra in the nano-molar range. This represents the first reported rhodamine-based sensor capable of detecting both Cu2+ and VO2+ using two different modes. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
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