IMPEDANCE SPECTROSCOPY ANALYSIS OF DODAB/NITSPC LAYER-BY-LAYER (LBL) FILMS FOR DETECTION OF CARBENDAZIM (MBC) USING INFORMATION VISUALIZATION METHODS

Published in 12/12/2023 - ISBN: 978-65-272-0088-8

Paper Title
IMPEDANCE SPECTROSCOPY ANALYSIS OF DODAB/NITSPC LAYER-BY-LAYER (LBL) FILMS FOR DETECTION OF CARBENDAZIM (MBC) USING INFORMATION VISUALIZATION METHODS
Authors
  • Leonardo Negri Furini
  • Jose Diego Fernandes
  • Douglas Henrique Vieira
  • Luis F.C. Morato (DR), FCT-UNESP
  • Neri Alves
  • Carlos José leopoldo Constantino
Modality
Pôster
Subject area
Biossensores / Biomoléculas
Publishing Date
12/12/2023
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/workshop-do-ineo-2023/613279-impedance-spectroscopy-analysis-of-dodabnitspc-layer-by-layer-(lbl)-films-for-detection-of-carbendazim-(mbc)-usi
ISBN
978-65-272-0088-8
Keywords
e-tongue, impedance spectroscopy, carbendazim, information visualization, LbL films
Summary
Usually, electronic tongues (e-tongue) do not require specific interactions to discriminate aqueous solutions. Among the several factors which determine the electrical properties of sensorial units, the interactions between liquids and interfaces have a crucial role. Here, we explore the interaction between dioctadecyldimethylammonium bromide (DODAB) lipid and carbendazim (MBC) pesticide in an e-tongue to discriminate different MBC concentrations in aqueous solutions. The sensorial units were fabricated of gold interdigitated electrodes (IDEs) coated with Layer-by-Layer (LbL) films of DODAB and nickel tetrasulfonatedphthalocyanine (NiTsPc), perylene and 1,2-dipalmitoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (DPPG), namely DODAB/NiTsPc and Perylene/DPPG, respectively. Besides a bare electrode also constituted the e-tongue to distinguish MBC concentrations from 1.0 x 10-7 up to 1.0 x 10-10 mol L-1, by impedance spectroscopy. The LbL films were manually fabricated obtaining linear growth monitored via UV-Vis absorption spectroscopy. Optical images associated with chemical mapping reveals the presence of small aggregates in the DODAB/NiTsPc LbL film surface. Although the e-tongue was able to discriminate all MBC concentrations by means interactive document map (IDMAP), only the sensorial unit covered with DODAB/NiTsPc LbL film presents satisfactory response. According to the equivalent circuit the main contribution arises from the bulk and film surface due to the interaction between DODAB and MBC indicating selectivity of the sensorial unit. Finally, the adsorption of MBC molecules onto the film surface induced an irreversible process, although there are some frequencies which the sensorial unit response seems to be reversible, as shown by parallel coordinates. Acknowledgment The authors acknowledge Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, grants 2020/12282-4), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) –Finance Code 001, and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the financial support (Process 405087/2021-7 and 311601/2020-0). The authors also acknowledge Programa de Pós-Graduação em Ciência e Tecnologia de Materiais (POSMAT), Instituto Nacional de Eletrônica Orgânica (INEO), for technical support.
Title of the Event
Workshop do INEO 2023
City of the Event
Nazaré Paulista
Title of the Proceedings of the event
Anais do Workshop INEO 2023
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

FURINI, Leonardo Negri et al.. IMPEDANCE SPECTROSCOPY ANALYSIS OF DODAB/NITSPC LAYER-BY-LAYER (LBL) FILMS FOR DETECTION OF CARBENDAZIM (MBC) USING INFORMATION VISUALIZATION METHODS.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/613279-IMPEDANCE-SPECTROSCOPY-ANALYSIS-OF-DODABNITSPC-LAYER-BY-LAYER-(LBL)-FILMS-FOR-DETECTION-OF-CARBENDAZIM-(MBC)-USI. Access in: 13/10/2024

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