Exploring the electrical and optical properties of graphene derivatives for the detection of cyanotoxins

• Grant number: 18/07508-3
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2019
• End date: February 28, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Principal Investigator: Nirton Cristi Silva Vieira
• Grantee: Nirton Cristi Silva Vieira
• Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Federal de São Paulo (UNIFESP). Campus São José dos Campos. São José dos Campos , SP, Brazil
• Associated researchers: Francisco Eduardo Gontijo Guimaraes ; Maraisa Gonçalves ; Valtencir Zucolotto

Abstract

In this project, graphene derivatives - defined here as graphene oxide, reduced graphene oxide and graphene quantum dots - will be studied and applied as electronic and optical devices capable of directly interacting with cyanotoxins; highly toxic substances present in aquatic ecosystems and water reservoirs. For this purpose, thin films of graphene derivatives with different combinations and architectures will be fabricated onto interdigitated metal electrodes for the development of electronic devices. In addition, graphene quantum dots with different emission colors will be synthesized, studied and applied as optical probes with the same detection intention. It is expected that the electrical and optical properties of graphene derivatives will undergo considerable changes after interaction with the cyanotoxins. Specifically, we aim to detect microcystins and saxitoxins; the most predominant and lethal types of cyanotoxins, verifying the best cost-benefit linked to the sensitivity, reproducibility and measurement time involved. (AU)

Scientific publications

(8)

(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)

MAURUTO DE OLIVEIRA, GABRIELA C.; DE SOUZA CARVALHO, JEFFERSON HENRIQUE; BRAZACA, LAIS CANNIATTI; SILVA VIEIRA, NIRTON CRISTI; JANEGITZ, BRUNO CAMPOS. Flexible platinum electrodes as electrochemical sensor and immunosensor for Parkinson's disease biomarkers. BIOSENSORS & BIOELECTRONICS, v. 152, MAR 15 2020. (17/17572-8, 18/07508-3, 19/04085-7, 17/21097-3, 18/19750-3, 17/21898-6)

MATTIOLI, ISABELA A.; HASSAN, AYAZ; SANCHES, NATALIA M.; VIEIRA, NIRTON C. S.; CRESPILHO, FRANK N.. Highly sensitive interfaces of graphene electrical-electrochemical vertical devices for on drop atto-molar DNA detection. BIOSENSORS & BIOELECTRONICS, v. 175, MAR 1 2021. (19/12053-8, 18/07508-3, 17/20493-2, 18/22214-6, 18/11071-0, 19/15333-1)

CORREIA, ABILENE RODRIGUES; SAMPAIO, ISABELLA; COMPARETTI, EDSON JOSE; SILVA VIEIRA, NIRTON CRISTI; ZUCOLOTTO, VALTENCIR. Optimized PAH/Folic acid layer-by-layer films as an electrochemical biosensor for the detection of folate receptors. BIOELECTROCHEMISTRY, v. 137, FEB 2021. (18/07508-3, 18/12670-4)

BRAGA, THYAGO SANTOS; VIEIRA, NIRTON C. S.; ANTONELLI, EDUARDO; ROSA, FILIPE MENEZES; DONADON, MAURICIO VICENTE; CORAT, EVALDO JOSE. Development and study of low-cost VACNT/PDMS stretchable and resistive strain sensor. SENSORS AND ACTUATORS A-PHYSICAL, v. 315, NOV 1 2020. (12/15857-1, 18/07508-3)

PAULA, KELLY T.; TOMAZIO, NATHALIA B.; SALAS, ORIANA. I. A.; OTUKA, ADRIANO J. G.; ALMEIDA, JULIANA M. P.; ANDRADE, MARCELO B.; VIEIRA, NIRTON C. S.; BALOGH, DEBORA T.; MENDONCA, CLEBER R.. Femtosecond-laser selective printing of graphene oxide and PPV on polymeric microstructures. Journal of Materials Science, v. 56, n. 19, p. 11569-11577, JUL 2021. (18/07508-3)

BRAGA, THYAGO SANTOS; VIEIRA, NIRTON C. S.; ANTONELLI, EDUARDO; DONADON, MAURICIO VICENTE; CORAT, EVALDO JOSE. Evaluation of conductivity and piezo-impedance response of VACNTs/PDMS nanocomposite-based strain sensors under small deformations. SENSORS AND ACTUATORS A-PHYSICAL, v. 342, p. 10-pg., 2022-08-01. (19/18572-7, 18/07508-3, 12/15857-1)

DOS SANTOS, FABRICIO A.; VIEIRA, NIRTON C. S.; ZAMBIANCO, NAIARA A.; JANEGITZ, BRUNO C.; ZUCOLOTTO, VALTENCIR. The layer-by-layer assembly of reduced graphene oxide films and their application as solution-gated field-effect transistors. Applied Surface Science, v. 543, MAR 30 2021. (17/21898-6, 18/07508-3, 17/21097-3)

CORREIA, ABILENE RODRIGUES; SAMPAIO, ISABELLA; COMPARETTI, EDSON JOSE; VIEIRA, NIRTON CRISTI SILVA; ZUCOLOTTO, VALTENCIR. Detecting cancer cells with a highly sensitive LbL-based biosensor. Talanta, v. 233, OCT 1 2021. (18/12670-4, 18/07508-3)

Filed patent(s) as a result of this research project