Synthesis and characterization of the first cyrhetrenyl-appended calix[4]arene macrocycle and its application as an electrochemical sensor for the determination of Cu(II) in bivalve mollusks using square wave anodic stripping voltammetry
Author
dc.contributor.author
Pizarro, Jaime
Author
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Flores, Erick
Author
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Jimenez, Victor
Author
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Maldonado, Tamara
Author
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Saitz, Claudio
Author
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Vega, Andres
Author
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Godoy, Fernando
Author
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Segura, Rodrigo
Admission date
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2019-10-22T03:10:04Z
Available date
dc.date.available
2019-10-22T03:10:04Z
Publication date
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2019
Cita de ítem
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Sensors and Actuators, B: Chemical, Volumen 281,
Identifier
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09254005
Identifier
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10.1016/j.snb.2018.09.099
Identifier
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https://repositorio.uchile.cl/handle/2250/171852
Abstract
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An electrochemical sensor for the determination of Cu(II) in bivalve mollusks using a glassy carbon electrode modified with p-tert-butylcalix [4]arene-bis-cyrhetrenylimine (Cy2(Calix [4])) by square wave anodic stripping voltammetry (SWASV) has been developed. The organometallic compound was synthesized from cyrhetrene-carboxaldehyde and 25,26-bis-(2-aminoethoxy)-26,28-dihydrocalix [4]arene through a condensation reaction. Metalloligand (Cy2(Calix [4])) was characterized by FT-IR and 1H-13C 2D NMR spectroscopies and monocrystal X-ray diffraction and was obtained as a single isolated isomer (E). The optimum chemical and electrochemical conditions for the modified electrode were optimized and the methodology was applied in different samples of bivalve mollusks with satisfactory results. A cooperative effect between the organometallic fragment and the calixarene macrocycle improves the preconcentration capacity of the electrochemical sensor, creating a new opportunity to perform rapid and sensitive analyses in the detection of copper in marine resources.
Synthesis and characterization of the first cyrhetrenyl-appended calix[4]arene macrocycle and its application as an electrochemical sensor for the determination of Cu(II) in bivalve mollusks using square wave anodic stripping voltammetry