Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/34409
Title: | Highly selective optical chemosensor for cyanide in aqueous medium |
Author: | Rodrigues, João M. M. Farinha, Andreia A. S. Tomé, Augusto C. Cavaleiro, José A. S. Tomé, João P. C. |
Keywords: | Anions Anion binding Chemosensor Chromogenic Cyanide Naked-eye Phthalocyanines |
Issue Date: | 1-Mar-2016 |
Publisher: | Elsevier |
Abstract: | New cyanide selective chromogenic chemosensors based on metal-phthalocyanines containing four tosylamino groups were developed. These new receptors have high sensitivity for several anions (AcO−, F−, CN−, NO2−, H2PO4− and OH−) over other anions, such as: Br−, Cl−, NO3− and HSO4−. The experiments were conducted by UV–vis spectroscopy in DMSO and THF solutions. The selectivities were also checked in DMSO:water mixtures. In solutions containing water the highest selectivity was obtained for CN− anion. The host:guest complexes formed during the sensing event can be undo by acid treatment with a solution of trifluoroacetic acid without loss of the sensing ability of the chemosensors allowing their reuse. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/34409 |
DOI: | 10.1016/j.snb.2015.10.026 |
ISSN: | 0925-4005 |
Appears in Collections: | DQ - Artigos QOPNA - Artigos |
Files in This Item:
File | Description | Size | Format | |
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rodrigues2016.pdf | 2.33 MB | Adobe PDF | View/Open |
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