Synthesis and polymerization of polyelectrolyte-based conductive inks: the protagonism of the coadjutant oxidizing salt

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity College London-
Autor(es): dc.creatorGomez Higuita, Germán D.-
Autor(es): dc.creatorGünther, Florian-
Autor(es): dc.creatorSchroeder, Bob C.-
Autor(es): dc.creatorFaria, Gregorio C.-
Data de aceite: dc.date.accessioned2025-08-21T15:58:22Z-
Data de disponibilização: dc.date.available2025-08-21T15:58:22Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-07-16-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d4py00574k-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298715-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298715-
Descrição: dc.descriptionPoly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has gained significant popularity as a material in both academic and industrial fields, especially due to the its vast application in electronic-based devices. However, despite its popularity and prominence in organic electronics, there is still a lack of scientific references regarding the synthesis and production of PEDOT:PSS inks. Here, we aim to discuss and elucidate the relationship between the conducting properties of PEDOT:PSS inks and the oxidizing agent concentration used during the oxidative polymerization of EDOT in the presence of PSS. To achieve this, we first studied the effect of addition of an oxidant to PSS solutions via dynamic light scattering (DLS) to characterize whether a higher oxidant concentration impacts the chain conformation of PSS in solution. Furthermore, we conducted UV-Vis spectroscopy measurements at various stages during the synthesis and purification of PEDOT:PSS to assess the formation of polarons and bipolarons. Finally, we evaluated the properties of deposited PEDOT:PSS films. Our findings demonstrate that the addition of an oxidant to PSS solutions leads to polyelectrolyte chain shrinkage, due to the screening of electrostatic interactions between the negatively charged sulfonate groups. Consequently, the likelihood of effective coupling between the PEDOT+ and PSS− counterparts is reduced due to the presence oxidant ions. This hypothesis was confirmed since inks polymerized with a higher oxidant concentration underwent depletion from bipolarons to polarons during the purification process as counterions originating from the oxidizing agent were removed.-
Descrição: dc.descriptionInstituto de Fisica de Sao Carlos (IFSC) Universidade de Sao Paulo (USP)-
Descrição: dc.descriptionDepartamento de Ciência e Engenharia de Materiais Escola de Engenharia de Sao Carlos Universidade de Sao Paulo (USP)-
Descrição: dc.descriptionInstituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual de Sao Paulo (UNESP)-
Descrição: dc.descriptionDepartment of Chemistry University College London, 20 Gordon Street-
Descrição: dc.descriptionInstituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual de Sao Paulo (UNESP)-
Formato: dc.format3195-3203-
Idioma: dc.languageen-
Relação: dc.relationPolymer Chemistry-
???dc.source???: dc.sourceScopus-
Título: dc.titleSynthesis and polymerization of polyelectrolyte-based conductive inks: the protagonism of the coadjutant oxidizing salt-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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