Langmuir Monolayers of Polyphenyl Carboxylic Acids

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniv. do Estado de São Paulo-
Autor(es): dc.contributorFaculty of Chemistry-
Autor(es): dc.creatorDynarowicz-Ła̧tka, Patrycja-
Autor(es): dc.creatorDhanabalan, Anantharaman-
Autor(es): dc.creatorCavalli, Ailton-
Autor(es): dc.creatorOliveira Jr., Osvaldo N.-
Data de aceite: dc.date.accessioned2025-08-21T18:13:02Z-
Data de disponibilização: dc.date.available2025-08-21T18:13:02Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2000-03-02-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/jp992396a-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230961-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230961-
Descrição: dc.descriptionA series of 4′-substituted (methyl, phenyl, biphenyl, toluilyl, nitro, cyano, and p-nitrophenyl) 5′-phenyl-m-terphenyl-4-carboxylic acids (PTCAs) have been synthesized, and their Langmuir monolayers were characterized using surface pressure and surface potential isotherms under a variety of experimental conditions. A long plateau appears at the pressure-area isotherms for most compounds, which is attributed to the tilting of molecules upon compression. A model is presented for the molecular arrangements which explains the decrease in dipole moment in the plateau region. As expected, the monolayer stability was higher for derivatives with more hydrophobic substituents, whereas the introduction of an additional hydrophilic group, viz. -CN or - NO2, in the parent PTCA molecule yielded negative surface potentials since the latter groups contributed negatively, in opposition to the positive contribution from the COOH group.-
Descrição: dc.descriptionInst. de Fis. de São Carlos Universidade de São Paulo, CP 369, CEP 13560-970, São Carlos, SP-
Descrição: dc.descriptionInst. de Biol. Letras e Cie. Exatas Univ. do Estado de São Paulo, S. José do Rio Preto, SP-
Descrição: dc.descriptionJagiellonian University Faculty of Chemistry, Ingardena 3, 30-060 Krakow-
Formato: dc.format1701-1707-
Idioma: dc.languageen-
Relação: dc.relationJournal of Physical Chemistry B-
???dc.source???: dc.sourceScopus-
Título: dc.titleLangmuir Monolayers of Polyphenyl Carboxylic Acids-
Tipo de arquivo: dc.typelivro digital-
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