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Preparation and photoluminescence properties of electrospun nanofibers of C60/PVK

Author:
Lei Gao   Congju Li  


Journal:
Journal of Luminescence


Issue Date:
2010


Abstract(summary):

Ultrafine fullerene (C60)/poly(N-vinylcarbazole) (PVK) composite fibers with 1 mum diameter were prepared by electrospinning C60/PVK blend solutions in solvent mixtures of N,N-dimethylformamide (DMF)/toluene. The UV absorption spectra of nanofibers have a similar behavior as observed in the thin films for the same doping condition. It is interesting to observe that the PVK nanofibers have a very strong blue-violet luminescence, while `bright spots' due to C60 can be observed on the C60/PVK fibers under UV irradiation in a fluorescence optical microscope. Compared to the emission spectra of PVK thin films, the photoluminescence of the PVK nanofibers shows a new emission peak at 437 nm. Efficient energy transfer was observed in C60/PVK thin films, as well as in blend nanofibers. [All rights reserved Elsevier].


Page:
236-239


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