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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrochemical sensor for nitric oxide using layered films composed of a polycationic dendrimer and nickel(II) phthalocyaninetetrasulfonate deposited on a carbon fiber electrode

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Author(s):
Cancino, Juliana [1, 2, 3, 4] ; Borgmann, Sabine [2, 3, 5] ; Machado, Sergio A. S. [1] ; Zucolotto, Valtencir [4] ; Schuhmann, Wolfgang [2, 3, 5] ; Masa, Justus [2, 3]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Grp Mat Eletroquim & Metodos Eletroanalit, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[2] Ruhr Univ Bochum, Analyt Chem Elektroanalyt & Sensor, D-44780 Bochum - Germany
[3] Ruhr Univ Bochum, Ctr Electrochem Sci CES, D-44780 Bochum - Germany
[4] Univ Sao Paulo, Nanomed & Nanotoxicol Grp, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[5] Ruhr Univ Bochum, Res Dept Interfacial Syst Chem, D-44780 Bochum - Germany
Total Affiliations: 5
Document type: Journal article
Source: Microchimica Acta; v. 182, n. 5-6, p. 1079-1087, APR 2015.
Web of Science Citations: 5
Abstract

We have developed an electrochemical sensor for nitric oxide that is based on multi-layers of nickel(II) phthalocyaninetetrasulfonate and a polyamidoamine dendrimer assembled on the surface of a carbon-fiber microelectrode. This sensor responds to nitric oxide at a working potential of 800 mV with a sensitivity of 5.54 pAa (TM)mu MaEuro3/4(1) which, however, depends on the dendrimer layer position deposited on the microelectrode. The limit of detection is as low as 5.5 mu M at a signal-to-noise ratio of 3. The electrode exhibits good selectivity for nitric oxide over common interferents including dopamine, nitrite, hydrogen peroxide, norepinephrine, epinephrine and ascorbic acid. (AU)

FAPESP's process: 08/00546-5 - Self-organization in the development of sensors, biosensors and membrane models for application in nanomedicine
Grantee:Juliana Cancino Bernardi
Support type: Scholarships in Brazil - Doctorate