A facile method to prepare the white persistent luminescent fibers based on Sr2ZnSi2O7Eu2+, Dy3+ and fluorescence pigments
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The polyacrylonitrile composite fibers with white persistent luminescence were prepared by adding different concentrations of Sr2ZnSi2O7: Eu2+, Dy3+ (SZO) and Rhodamine B fluorescent pigments (FP) into polyacrylonitrile spinning solution. Morphology, phase structure, color properties, photoluminescence properties and afterglow properties were examined. Photoluminescence test indicated that the emission spectrum of Sr2ZnSi2O7: Eu2+, Dy3+ phosphors overlapped with the excitation spectrum of fluorescent pigments in the range of 450–550 nm, which was the necessary condition for the energy transfer from the Sr2ZnSi2O7: Eu2+, Dy3+ to the Rhodamine B fluorescent pigments (FP). The phosphorescent color of the composite fibers showed that the white luminescent polyacrylonitrile fibers can be gained when weight ratios of SZO/FP ranged from 10:0.2 to 10:0.5. Decay curves suggested that the as weight ratio of SZO/FP was less than 10:0.75, the initial brightness of the composite fibers could not be significantly reduced.
This work has been supported by the Fundamental Research Funds For The Central Universities (Grant No. JUSRP51723B), the Natural Science Foundation of Jiangsu Province of China (BK20171140) and Key Laboratory of Textile Fiber & Product (Wuhan Textile University), Ministry of Education (Grant No. FZXW2017001).
- 10.B.F. Lei, Y.L. Liu, Z.R. Ye, C.S. Shi, Chin. Chem. Lett. 15, 335 (2004)Google Scholar