Nanostructured sensors modified with graphene and tapioca for determination of phenolics compounds and nitrogenous bases

• Grant number: 16/12697-4
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): August 01, 2016
• Effective date (End): December 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Bruno Campos Janegitz
• Grantee: Luiz Otávio Orzari
• Home Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil

Abstract

In recent years, the development of nanostructured sensors and biosensors has attracted great interest from scientific community, because they are cheap alternatives for the determination of various substances. In this context, we can highlight graphene, which has interesting physicochemical properties, such as high surface area, high electrical conductivity and strong mechanical resistance. Tapioca, in turn, has a high starch value in its composition, that along which its physical characteristics makes this material an excellent candidate for the nanomaterial support function, in its polymerized form, which can be utilized in modified electrodes. In the present work, are proposed new sensors architectures, using graphene and tapioca for the determination of phenolic compounds and nitrogenous bases adenine and guanine in biological samples, in order to develop systems with low cost and high sensibility.

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PRADEL-FILHO, LAURO A.; ANDREOTTI, ISABELA A. A.; CARVALHO, JEFFERSON H. S.; ARAUJO, DIELE A. G.; ORZARI, LUIZ O.; GATTI, ALEXANDRE; TAKEUCHI, REGINA M.; SANTOS, ANDRE L.; JANEGITZ, BRUNO C. Glass varnish-based carbon conductive ink: A new way to produce disposable electrochemical sensors. SENSORS AND ACTUATORS B-CHEMICAL, v. 305, FEB 15 2020. Web of Science Citations: 0.

ORZARI, LUIZ OTAVIO; DE FREITAS, RAFAELA CRISTINA; DE ARAUJO ANDREOTTI, ISABELA APARECIDA; GATTI, ALEXANDRE; JANEGITZ, BRUNO CAMPOS. A novel disposable self-adhesive inked paper device for electrochemical sensing of dopamine and serotonin neurotransmitters and biosensing of glucose. BIOSENSORS & BIOELECTRONICS, v. 138, AUG 1 2019. Web of Science Citations: 2.

DE ARAUJO ANDREOTTI, ISABELA APARECIDA; ORZARI, LUIZ OTAVIO; CAMARGO, JESSICA ROCHA; FARIA, RONALDO CENSI; MARCOLINO-JUNIOR, LUIZ HUMBERTO; BERGARNINI, MARCIO FERNANDO; GATTI, ALEXANDRE; JANEGITZ, BRUNO C. Disposable and flexible electrochemical sensor made by recyclable material and low cost conductive ink. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 840, p. 109-116, MAY 1 2019. Web of Science Citations: 4.

ORZARI, LUIZ O.; SANTOS, FABRICIO A.; JANEGITZ, BRUNO C. Manioc starch thin film as support of reduced graphene oxide: A novel architecture for electrochemical sensors. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 823, p. 350-358, AUG 15 2018. Web of Science Citations: 0.

ORZARI, LUIZ OTAVIO; DE ARAUJO ANDREOTTI, ISABELA APARECIDA; BERGAMINI, MARCIO FERNANDO; MARCOLINO JUNIOR, LUIZ HUMBERTO; JANEGITZ, BRUNO CAMPOS. Disposable electrode obtained by pencil drawing on corrugated fiberboard substrate. SENSORS AND ACTUATORS B-CHEMICAL, v. 264, p. 20-26, JUL 1 2018. Web of Science Citations: 9.