Authors : *S. G. Itankar1, M. Dandekar1, S. B. Kondawar1, B. M. Bahirwar2
Page Nos : 509-515
Description :
One dimensional nanostructure materials have tremendous scope because of their
important properties like high surface area to volume ratio, high porosity, high aspect
ratio and reactivity. Rare earth ions are important because it possess high yield of
luminescence and practical applications in modern lighting and display fields. In this
paper, we report the synthesis of light emitting PMMA/Eu3+ nanofibers by using
electrospinning technique. The nanofibers are characterized by scanning electron
microscopy (SEM), Fourier transform infrared (FT-IR) and photoluminescence (PL). The
SEM image of PMMA/Eu3+ nanofibers for weight composition (Eu(Cl)3:PMMA =1:9) as
prepared by electrospinning reveals the diameter of the fibers less than 200 nm. FT-IR
spectra of PMMA/Eu3+ nanofibers indicated that upon addition of Eu3+ ions, there
appeared a higher frequency shoulder in the spectra due to the strong interaction
between PMMA molecule chain and Eu3+ ions. The intensity of emission could be
controlled by the weight ratio of Eu3+ions to PMMA molecule chain at the weight ratio
1:9. The fluorescence enhancement of Eu3+ ions in PMMA occurs because the PMMA
keeps the donors and acceptors close, which results in the effective intermolecular
energy transfer and consequently, the high enhancing efficiency. In our work the
PMMA/Eu3+ nanofibers showed excellent photoluminescence properties. It is expected
that these materials would be applied in optoelectronic nanodevices.
