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Luminescence properties of composite nanofibers with different diameters prepared by electrospinning technology

H. YU1,* , Y. LI1, Y. WU1, Y. SHEN1, B. CHEN2

Affiliation

  1. College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, Liaoning 116028, P.R. China
  2. Department of Physics, Dalian Maritime University, Dalian, Liaoning 116026, P.R. China

Abstract

Various composite nanofibers composed of polystyrene (PS, Mw ≈ 98 000) and europium complex Eu(DBM)3phen (DBM is dibenzoylmethane; phen is 1,10-phenanthroline ) were prepared by electrospinning technology. The mass ratio of Eu(DBM)3phen complex to PS was fixed to 1:100 in all composite fibers samples. Scanning electron microscopy (SEM) analysis indicated that the diameter size of the composite nanofibers could be adjusted in the range of 300-1000 nm by changing PS concentration, and their length remain the same of several tens centimeter. The luminescent properties of the composite nanofibers with different diameters were studied carefully in comparison to the pure Eu(DBM)3phen complex. The results showed that the luminescent decay time constant for the 5D0-7F2 transitions in the composite fibers increased gradually with fibers diameter increase and became longer compared to that in the pure europium complex. Moreover these composite nanofibers exhibited the much better photostability than that of the pure complex, and the improvement degree of the photostability was closely related to the diameter size of the nanofibers. The novel luminescent composite nanofibers prepared in this work are expected to have potential applications in a wide variety of new technologies including the fields of material, energy and environment and so on..

Keywords

Electrospinning nanofibers; Diameter; Luminescent properties.

Submitted at: Oct. 9, 2014
Accepted at: March 19, 2015

Citation

H. YU, Y. LI, Y. WU, Y. SHEN, B. CHEN, Luminescence properties of composite nanofibers with different diameters prepared by electrospinning technology, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 3-4, pp. 290-295 (2015)