Journal
DYES AND PIGMENTS
Volume 96, Issue 2, Pages 414-422Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2012.09.009
Keywords
Water soluble polymer; Polymer chemosensors; Chemosensor; Rhodamine; Sensory materials; Sensing mercury(II)
Funding
- Spanish Ministerio de Ciencia e Innovacion-Feder [MAT2011-22544]
- Consejeria de Educacion - Junta de Castilla y Leon [BU001A10-2]
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A water-insoluble organic chemosensor has been chemically modified by introducing a polymerizable methacrylamide moiety via copolymerization with a hydrophilic comonomer (vinylpyrrolidone), producing a water-soluble acrylic copolymer that is able to sense environmentally poisonous cations in pure aqueous media. The chemosensor is a derivative of Rhodamine B, which behaves as a fluorescent and chromogenic sensor toward various heavy cations, particularly Hg(II). Titration curves of Hg(II) were constructed using rapid, cheap, and widely available techniques, such as fluorescence and UV/Vis spectroscopies. Furthermore, a colorimetric response from the copolymer chemosensor permitted the detection of Hg(II) by eye due to the development of a pink color when this cation interacted with the copolymer in aqueous media. (C) 2012 Elsevier Ltd. All rights
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