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Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA

Primo, Emiliano Nicolás et al · Elsevier Science Sa · 2014

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Autore / responsabile
Primo, Emiliano Nicolás et al
Editore
Elsevier Science Sa
Anno
2014
ISSN
1567-5394
ISSN
1567-5394
Lingua
Inglés

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We report the quantification of promethazine (PMZ) using glassy carbon electrodes (GCE) modified with bamboo-like multi-walled carbon nanotubes (bCNT) dispersed in double stranded calf-thymus DNA (dsDNA) (GCE/bCNT-dsDNA). Cyclic voltammetry measurements demonstrated that PMZ presents a thin film-confined redox behavior at GCE/bCNT-dsDNA, opposite to the irreversibly-adsorbed behavior obtained at GCE modified with bCNT dispersed in ethanol (GCE/bCNT). Differential pulse voltammetry-adsorptive stripping with medium exchange experiments performed with GCE/bCNT-dsDNA and GCE modified with bCNTs dispersed in single-stranded calf-thymus DNA (ssDNA) confirmed that the interaction between PMZ and bCNT-dsDNA is mainly hydrophobic. These differences are due to the intercalation of PMZ within the dsDNA that supports the bCNTs, as evidenced from the bathochromic displacement of UV–Vis absorption spectra of PMZ and quantum dynamics calculations at DFTB level. The efficient accumulation of PMZ at GCE/bCNT-dsDNA made possible its sensitive quantification at nanomolar levels (sensitivity: (3.50 ± 0.05) × 108 μA·cm− 2·M− 1 and detection limit: 23 nM). The biosensor was successfully used for the determination of PMZ in a pharmaceutical product with excellent correlation. Fil: Primo, Emiliano Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina Fil: Oviedo, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina

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APA 7

Primo, E. N. E. A. (2014). Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA. http://hdl.handle.net/11336/31621

MLA

Primo, Emiliano Nicolás et al. "Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA." 2014. http://hdl.handle.net/11336/31621.

Chicago

Primo, Emiliano Nicolás et al. 2014. "Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA.". http://hdl.handle.net/11336/31621.

Harvard

Primo, E. N. E. A. 2014, Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA, Elsevier Science Sa, available at: http://hdl.handle.net/11336/31621 [Accessed 9 Aug. 2026].

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Titolo
Bioelectrochemical sensing of promethazine with bamboo-type multiwalled carbon nanotubes dispersed in calf-thymus double stranded DNA
Autore / collaboratori
Primo, Emiliano Nicolás et al
Editore
Elsevier Science Sa
Anno di pubblicazione
2014
ISSN
1567-5394
ISSN
1567-5394
Lingua
Inglés

Soggetti

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Bamboo Carbon Nanotube; Dispersion; Double Stranded Dna; Intercalation; Promethazine; Electrochemical (Bio)Sensor; https://purl.org/becyt/ford/1.4; https://purl.org/becyt/ford/1
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