Pf/clay hybrid materials: a simple method to modulate the optical properties

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dc.contributor.authorChen Em, Marcio Chao [UNIFESP]
dc.contributor.authorBarbosa, Camila Gouveia [UNIFESP]
dc.contributor.authorPeres, Laura Oliveira [UNIFESP]
dc.contributor.authorFaez, Roselena
dc.date.accessioned2019-01-21T10:29:58Z
dc.date.available2019-01-21T10:29:58Z
dc.date.issued2016
dc.description.abstractThe aim of this work was modulate the emission properties and improve thermal stability of a conjugated polymer incorporated into an inorganic matrix. Hybrid material was prepared based on poly(9,9-dioctylfluorene-co-phenylene (PF) and montmorillonite (Na(+)Mt) clay using wet impregnation of 10, 30 and 50 wt.% of PF into Na(+)Mt and Na(+)Mt intercalated with ammonium quaternary salts (hexadecyltrimethylammonium - HDTMA) in a different proportions (OMt-1 and OMt-2). The materials were characterized by infrared and UV-Vis spectroscopy, fluorescence, X-ray diffratometry and thermogravimetry analysis. The results show that the presence of the clay alters the photoluminescent and thermal properties. Nevertheless, the degree of the clay organophilization and the clay content influences the luminescent properties due to the diverse interaction behavior between the polymer and clay. The sodium clay acted only as dispersing agent since no intercalation process occurs and the emission displacement is assigned to this behavior. In this case the PF emission displace from 402 to 395 nm. A nonlinear displacement is observed for PF/OMt-2 due the difficulties to conclude if the intercalation of the polymer occurs (379, 403 and 412 for hybrid with 10, 30 and 50%, respectively). For PF/OMt-1 a higher displacements for lower wavelength is observed due to intercalation of polymer chains and subsequent isolation in the interlamellar space, especially with material with 10 and 30% of PF in the hybrid material, whose displacement reached to 360 nm. All these results show that is possible to try to control the emission of the conjugated hybrid material changing the rate of the material.en
dc.description.affiliationLaboratory of Hybrid Materials, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo – UNIFESP, Diadema, SP, Brazil
dc.description.affiliationLaboratory of Polymeric and Biosorbent Materials, Department of Natural Science, Mathematics and Education, Universidade Federal de São Carlos – UFSCar, Araras, SP, Brazil
dc.description.affiliationUnifespLaboratory of Hybrid Materials, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo – UNIFESP, Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFAPESP [07/50742-2]
dc.description.sponsorshipCNPq
dc.description.sponsorshipCapes-nBioNet
dc.description.sponsorshipINEO-INCT (National Institute of Science and Technology for Organic Electronics)
dc.description.sponsorshipIDThe authors thank FAPESP (07/50742-2), CNPq, Capes-nBioNet and INEO-INCT (National Institute of Science and Technology for Organic Electronics) for financial support. The authors also thank Prof. Dr. Marcos Augusto Bizeto and Prof. Dr. Tereza da Silva Martins for DRX analysis.
dc.format.extent38-43
dc.identifierhttp://dx.doi.org/10.1590/0104-1428.1808
dc.identifier.citationPolimeros-Ciencia E Tecnologia. Sao carlos, v. 26, n. 1, p. 38-43, 2016.
dc.identifier.doi10.1590/0104-1428.1808
dc.identifier.fileS0104-14282016000100006.pdf
dc.identifier.issn0104-1428
dc.identifier.scieloS0104-14282016000100006
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/49509
dc.identifier.wosWOS:000376023600006
dc.language.isoeng
dc.publisherAssoc brasil polimeros
dc.relation.ispartofPolimeros-Ciencia E Tecnologia
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectPolyfluoreneen
dc.subjectClayen
dc.subjectHybrid Materialsen
dc.subjectPhotoluminescenceEnhanced Quantum Efficiencyen
dc.subjectLight-Emitting Devicesen
dc.subjectSilicate Nanocompositeen
dc.subjectConjugated Polymeren
dc.subjectFluorenyl Groupsen
dc.subjectNanoparticlesen
dc.subjectCopolymersen
dc.subjectEmissionen
dc.subjectPhotoluminescenceen
dc.subjectMontmorilloniteen
dc.titlePf/clay hybrid materials: a simple method to modulate the optical propertiesen
dc.typeinfo:eu-repo/semantics/article
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