Electrospinning: A facile method to disperse fluorescent quantum dots in nanofibers without förster resonance energy transfer Article

cited authors

  • Li, M; Zhang, J; Zhang, H; Liu, Y; Wang, C; Xu, X; Tang, Y; Yang, B

fiu authors

abstract

  • Fluorescent CdTe quantum dots (QDs) can be dispersed into polyvinyl alcohol) (PVA) solid nanofibers by electrospinning of a QD-PVA blend solution. Although solution blending methods usually cause phase separation as the solvent evaporates; here, attractively, the QDs do not aggregate, on the contrary, they attain a separation and distribution in the PVA matrix that is as good and uniform as that in solution. Consequently, Förster resonance energy transfer (FRET) between QDs is efficiently avoided, leading to the good preservation of the original fluorescence properties of QDs even when multi-color QDs are incorporated. Thus, the emission color of the solid nanofibers can be well predicted from the electrospinning solution. Further investigation reveals that the fast evaporation rate of the solvent in the electrospinning process lies at the basts of the uniform distribution of the QDs. Because of the quick "freezing" of the polymer chains, the CdTe QDs are confined to their places with no time to aggregate. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.

publication date

  • November 23, 2007

Digital Object Identifier (DOI)

start page

  • 3650

end page

  • 3656

volume

  • 17

issue

  • 17