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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Self-Assembled Peptide-Polyfluorene Nanocomposites for Biodegradable Organic Electronics

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Autor(es):
Khanra, Soma [1] ; Cipriano, Thiago [2] ; Lam, Thomas [3] ; White, Tommi A. [3] ; Fileti, Eudes E. [4] ; Alves, Wendel A. [2] ; Guha, Suchismita [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 - USA
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09219580 Sao Paulo - Brazil
[3] Univ Missouri, Electron Microscopy Core Facil, Columbia, MO 65211 - USA
[4] Univ Fed Sao Paulo, Inst Ciencia & Tecnol, BR-12231280 Sao Paulo - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: ADVANCED MATERIALS INTERFACES; v. 2, n. 14 SEP 22 2015.
Citações Web of Science: 16
Resumo

Based on self-assembly and mimicking strategies occurring in nature, peptide nanomaterials play a unique role in a new generation of hybrid materials for the electronics of the 21st century. This report describes the functionalization of diphenylalanine (FF)-based micro/nanostructures with blue-emitting conducting polymers of the polyfluorene (PF) family. The FF: PF polymer nanocomposites are synthesized by a liquid-vapor phase method. Electron microscopy images reveal di-octyl-substituted PF (PF8) to bind better to the FF micro/nanotubes in comparison with ethyl-hexyl PF (PF2/6), which influences its optical properties. Molecular dynamics simulations of FF nanotubes with monomeric units of PFs show that PF8 favors greater proximity to the grooves on the surface of the nanotubes due to a higher van der Waals interaction energy compared to PF2/6. The FF: PF nanocomposites are further utilized in light-emitting diodes. Biodegradability tests from FF: PF8 nanocomposite films show more than 80% weight loss in 2 h by enzymatic action compared to PF8 pristine films, which do not degrade. Self-assembly of FF nanostructures with organic semiconductors opens up a new generation of biocompatible and biodegradable materials in organic electronics. (AU)

Processo FAPESP: 13/12997-0 - Auto-organização hierárquica de peptídeos anfifílicos: mecanismos fundamentais e potenciais aplicações
Beneficiário:Wendel Andrade Alves
Linha de fomento: Auxílio à Pesquisa - Regular