Selective sensing of Hg2+ by a proton-ionizable calix[4]arene fluoroionophore
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Selective sensing of Hg2+ by a proton-ionizable calix[4]arene fluoroionophore (434 views)

Arena G, Attanasio F, Zhang D, Yang Y, Bartsch RA, Sgarlata C

Anal Bioanal Chem (ISSN: 1618-2642), 2013 Jan; 405(2-3): 1133-1137.

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Paper type: Journal Article,

Impact factor: 3.578, 5-year impact factor: 3.744

Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-84873738355&partnerID=40&md5=cfb62c9c877c4354c1303d7e8ced56b5

Keywords: Calixarenes, Fluorescent Sensor, Heavy Metals, Mercury, Selective Detection, Calix[4]arenes, Fluorogenics, Fluoroionophores, Low Concentration Levels, Mercury-Sensing, Mixed Solvent, Selective Sensing, Ligands, Mercury (metal), Metal Ions, Phenols, Positive Ions, Protons, Fluorescent Dye, Article, Chemistry, Equipment, Evaluation, Genetic Procedures, Methodology, Water Pollutant, Biosensing Techniques, Chemical, Calix [4] Arenes,

Affiliations:
*** IBB - CNR ***

Dipartimento di Scienze Chimiche, Università Degli Studi di Catania, Viale Andrea Doria 6, Catania 95125, Italy
Istituto di Biostrutture e Bioimmagini, UOS Catania, CNR, Viale A. Doria 6, Catania 95125, Italy
Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, United States


References:
Not available.
Selective sensing of Hg2+ by a proton-ionizable calix[4]arene fluoroionophore

A fluorogenic derivative of a calix[4]arene with two proton-ionizable N-(phenyl)sulfonyl carboxamide-containing side arms in the 1,3-positions on the lower rim is employed for the selective sensing of Hg2+ at low concentration levels in water/MeCN (1:1, v/v) solutions containing Pb 2+ and Cd2+. All three metal ions quench the fluorescence of the ligand in pure MeCN. However, in water/MeCN mixed solvent, the recognition of such cations occurs differently as only Hg2+ complexation quenches the fluorescence of the calixarene. Experiments carried out in the presence of an acid and a bulky non-complexing cation shows that the quenching of the calixarene fluorescence upon Hg2+ addition is likely due to proton displacement from the proton-ionizable side arms of the ligand. The system may be employed as a simple tool for the selective and efficient mercury sensing in mixed water/organic solvent. © 2012 Springer-Verlag.
Selective sensing of Hg2+ by a proton-ionizable calix[4]arene fluoroionophore

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Selective sensing of Hg2+ by a proton-ionizable calix[4]arene fluoroionophore

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8 Records (8 excluding Abstracts).
Total impact factor: 32.515 (32.515 excluding Abstracts).
Total 5 year impact factor: 31.001 (31.001 excluding Abstracts).

Last modified by Marco Comerci on Sunday 12 July 2020, 13:14:55
434 views. Last view on Saturday 21 September 2024, 22:46:06