Adsorption of Triclosan on Sensors Based on PAH/PAZO Thin-Films: The Effect of pH

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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Abstract

Triclosan (TCS) is a broad-spectrum antimicrobial, preservative agent widely used in pharmaceuticals and personal care products, considered as a troubling contaminant from the environmental point of view because of its toxicity, bacterial resistance promotion, and estrogenic effects. Under this compliance, the pernicious presence of TCS in the environment is requiring the development of molecular dedicated sensors, which in turn leads to the need to find adequate molecular systems capable of giving rise to a transduction. In this work, in order to investigate the affinity of TCS to common polyelectrolytes in an aqueous environment the adsorption of TCS on thin layer-by-layer (LbL) films of poly(1-(4-(3-carboxy-4-hydroxyphenylazo) benzene sulfonamido) -1,2ethanediyl, sodium salt) (PAZO) and poly (allylamine hydrochloride) (PAH) polyelectrolytes at different values of pH of the solution and changing the outer layer, PAZO and PAH, was investigated. Results demonstrated that the PAH layer is the most indicated to better adsorb TCS molecules. These results are of great importance for the development of TCS sensors based on LbL films, since it indicates that the outer layers of LbL films should be positive electrically charged.

Original languageEnglish
Title of host publicationComputational Intelligence Methods for Bioinformatics and Biostatistics - 15th International Meeting, CIBB 2018, Revised Selected Papers
EditorsMaria Raposo, Paulo Ribeiro, Susana Sério, Antonino Staiano, Angelo Ciaramella
Place of PublicationCham
PublisherSpringer
Pages319-325
Number of pages7
ISBN (Electronic)978-3-030-34585-3
ISBN (Print)978-3-030-34584-6
DOIs
Publication statusPublished - 2020
Event15th International Conference on Computational Intelligence Methods for Bioinformatics and Biostatistics, CIBB 2018 - Caparica, Portugal
Duration: 6 Sep 20188 Sep 2018

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer
Volume11925 LNBI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference15th International Conference on Computational Intelligence Methods for Bioinformatics and Biostatistics, CIBB 2018
CountryPortugal
CityCaparica
Period6/09/188/09/18

Keywords

  • Adsorption
  • PAH
  • pH
  • Thin-film
  • Triclosan

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