Incorporation of polyfluorenes into poly(lactic acid) films for sensor and optoelectronics applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Martelo, L (Autor) Outra; Jimenez, A (Autor) Outra; Valente, AJM (Autor) Outra; Burrows, HD (Autor) Outra; Marques, AT (Autor) Outra; Forster, M (Autor) Outra; Scherf, U (Autor) Outra; Peltzer, M (Autor) Outra; Fonseca, SM (Autor) Outra

Revista

Título: Polymer International

Vol. 61

Páginas: 1023-1030

ISSN: 0959-8103

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: P-002-9NW

DOI: 10.1002/pi.4176

Abstract (EN): Films of neat and plasticized biodegradable poly(lactic acid) (PLA) matrices containing anionic conjugated polyelectrolytes, poly[9,9-bis(4-phenoxybutylsulfonate)]fluorene-2,7-diyl-alt-arylenes, with 1,4-phenylene and 4,4?-p-terphenylene, respectively, as arylene groups or a neutral poly(9,9-dialkylfluorene) for comparison were prepared by solution casting. These films were characterized using differential scanning calorimetry, thermogravimetry, scanning electron microscopy and fluorescence spectroscopy. In addition, the effects of plasticizer on the thermal properties and the oxygen permeability of the PLA films were measured through the oxygen transmission rate. Results show that it is possible to obtain thin, optically transparent and luminescent films with potential in oxygen sensing, exhibiting good thermal and photochemical stability. At high polyelectrolyte content, evidence is found for phase separation and aggregate formation and it is no longer possible to obtain completely homogeneous films. The possibility of incorporating the cationic metal complex tris(2,2'-bipyridyl)ruthenium(II) into plasticized PLA films containing conjugated polyelectrolytes for dual-wavelength ratiometric luminescence sensing is also discussed. Copyright (C) 2012 Society of Chemical Industry

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8