Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Silsesquioxane Modified with PAMAM Dendrimer and a Bimetallic Complex for Electrochemical Detection of Ascorbic Acid

Full text
Author(s):
Silvestrini Fernandes, Daniela [1, 2] ; do Carmo, Devaney Ribeiro [1]
Total Authors: 2
Affiliation:
[1] Sao Paulo State Univ Julio Mesquita Filho UNESP, Dept Chem & Phys, Ave Brasil 56, BR-15385000 Ilha Solteira, SP - Brazil
[2] Univ Sao Paulo, Dept Chem, Ave Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Electroanalysis; v. 33, n. 2, p. 365-374, FEB 2021.
Web of Science Citations: 0
Abstract

Octakis(3-chloropropyl)octasilsesquioxane (S) was organofunctionalized with the PAMAM Dendrimer G.0 (SPD). After functionalization, silsesquioxane interacts with copper chloride and subsequently with potassium hexacyanoferrate (III) to produce the structure CuHSPD. The silsesquioxane functionalized with the PAMAM dendrimer (SPD) and the obtained novel hybrid composite (CuHSPD) were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). The CuHSP voltammogram showed two well-defined redox pairs with E-theta `= 0.27 and 0.74 V, that are assigned to the Cu-I/Cu(II)and Fe-II(CN)(6)/Fe-III(CN)(6)redox pairs, respectively. The graphite paste electrode containing CuHSPD allowed the electrocatalytic determination of ascorbic acid using various electrochemical techniques such as cyclic voltammetry, differential pulse voltammetry, and chronoamperometry. (AU)

FAPESP's process: 12/05438-1 - Development of novel nanostructured organically functionalized hybrid silsesquioxanes: preparation, characterization and its application as a sensor of compounds and ions of environmental and biological interest
Grantee:Devaney Ribeiro Do Carmo
Support Opportunities: Regular Research Grants
FAPESP's process: 12/11306-0 - Electrochemical quantification of analytes of environmental and biological interest, using new materials prepared from functionalized silsesquioxanes.
Grantee:Daniela Silvestrini Fernandes
Support Opportunities: Scholarships in Brazil - Doctorate