Improving photoluminescence of poly(9-vinylcarbazole)/4,7-diphenyl-1,10-phenanthroline/tris-(8-hydroxyquinoline) aluminum fibers via coaxial electrospinning

Margarita Mondragón, Amanda Stephanie Garzón, Rubén Caro

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

5 Citas (Scopus)

Resumen

Solutions of poly(9-vinylcarbazole)/4,7-diphenyl-1,10-phenanthroline (PVK/Bphen) and poly(9-vinylcarbazole)/tris-(8-hydroxyquinoline) aluminum (PVK/Alq3) were individually delivered either to the inner or the outer needle of a coaxial spinneret for electrospinning to prepare green luminescent PVK/Bphen/Alq3 composite fibers. The influence of both flow rate and applied voltage on the photoluminescence of the composite fibers was evaluated. Scanning electron microscopy showed ribbon-like fibers with uneven surfaces and thickness of about 5 µm. Raman spectroscopy and fluorescence microscopy revealed that Bphen was homogenously dispersed in the PVK fibers; Alq3 was not. Photoluminescence shows strong evidence that there are marked conditions where emission of the co-electrospun PVK/Bphen/Alq3 fibers significantly improved as compared with those produced by simple electrospinning. It is suggested that the enhanced dispersion of the Alq3 allowed a more efficient energy transfer from the PVK to the Alq3.

Idioma originalInglés
Número de artículoAPP44019
PublicaciónJournal of Applied Polymer Science
Volumen133
N.º40
DOI
EstadoPublicada - 20 oct. 2016

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