New details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFraunhofer Institute for Manufacturing Technology and Advanced Materials Ifam-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorParaiba State University-João Pessoa-
Autor(es): dc.contributorUniversity of Bremen-
Autor(es): dc.contributorHerminio Ometto University Center-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorGonçalves Dias, Leonardo Francisco [UNESP]-
Autor(es): dc.creatorStamboroski, Stephani-
Autor(es): dc.creatorNoeske, Michael-
Autor(es): dc.creatorSalz, Dirk-
Autor(es): dc.creatorRischka, Klaus-
Autor(es): dc.creatorPereira, Renata-
Autor(es): dc.creatorDo Carmo Mainardi, Maria-
Autor(es): dc.creatorCardoso, Marina Honorato-
Autor(es): dc.creatorWiesing, Martin-
Autor(es): dc.creatorBronze-Uhle, Erika Soares-
Autor(es): dc.creatorEsteves Lins, Rodrigo Barros-
Autor(es): dc.creatorLisboa-Filho, Paulo Noronha [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:51:43Z-
Data de disponibilização: dc.date.available2022-02-22T00:51:43Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d0ra06511k-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/207893-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/207893-
Descrição: dc.descriptionTailoring the surface properties of materials for biomedical applications is important to avoid clinical complications. Forming thin layers of amphiphilic molecules with apolar regions that facilitate attractive intermolecular interactions, can be a suitable and versatile approach to achieve hydrophobic surface modification and provide functional antibacterial properties. Aiming to correlate layer structure and properties starting from film formation, octadecylphosphonic acid (ODPA) and dimethyloctadecyl (3-trimethoxysilylpropyl) ammonium chloride (DMOAP) layers were adsorbed onto smooth titania surfaces. Then the films were studied by atomic force microscopy (AFM) and X-ray Photoelectron Spectroscopy (XPS), and their interactions with aqueous environments were characterized by contact angle and zeta potential measurements. In addition, antibacterial assays were performed using E. coli and S. mutants to reveal the antibacterial properties effected by the surface modification. Immediately after sputter deposition, titania was hydrophilic; however, after air storage and adsorption of DMOAP or ODPA, an increase in the water contact angle was observed. XPS investigations after layer formation and after antibacterial tests revealed that the attachment of layers assembled from ODPA on titania substrates is considerably stronger and more stable than that observed for DMOAP films. Heat treatment strongly affects DMOAP layers. Furthermore, DMOAP layers are not stable under biological conditions. This journal is-
Descrição: dc.descriptionFraunhofer Institute for Manufacturing Technology and Advanced Materials Ifam-
Descrição: dc.descriptionSão Paulo State University-UNESP School of Science Department of Physics-
Descrição: dc.descriptionDepartment of Biochemistry Bauru School of Dentistry Sao Paulo University-USP-
Descrição: dc.descriptionDepartment of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry Sao Paulo University-USP-
Descrição: dc.descriptionParaiba State University-João Pessoa-
Descrição: dc.descriptionInstitute for Biophysics University of Bremen, Otto-Hahn-Allee 1-
Descrição: dc.descriptionSchool of Dentistry Herminio Ometto University Center-
Descrição: dc.descriptionDepartment of Restorative Dentistry Operative Dentistry Division Piracicaba Dental School University of Campinas (UNICAMP), Avenida Limeira 901-
Descrição: dc.descriptionSão Paulo State University-UNESP School of Science Department of Physics-
Formato: dc.format39854-39869-
Idioma: dc.languageen-
Relação: dc.relationRSC Advances-
???dc.source???: dc.sourceScopus-
Título: dc.titleNew details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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