Sunday, August 4, 2013

1308.0160 (Vito Fasano et al.)

Bright light emission and waveguiding in conjugated polymer nanofibers
electrospun from organic-salt added solutions

Vito Fasano, Alessandro Polini, Giovanni Morello, Maria Moffa, Andrea Camposeo, Dario Pisignano
Light emitting electrospun nanofibers of poly-[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N'-diphenyl)-N,N'-di(p-butyl-oxy-phenyl)-1,4-diaminobenzene)] (PFO-PBAB) are produced by electrospinning under different experimental conditions. In particular, uniform fibers with average diameter of 180 nm are obtained by adding an organic salt to the electrospinning solution. The spectroscopic investigation assesses that the presence of the organic salt does not alter the optical properties of the active material, therefore providing an alternative approach for the fabrication of highly emissive conjugated polymer nanofibers. The produced nanofibers display self-waveguiding of light, and polarized photoluminescence, which is especially promising for embedding active electrospun fibers in sensing and nanophotonic devices.
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