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Photochromic Nanofiber Aggregates of PVA/H3PMo12O40 Hybrid

Published online by Cambridge University Press:  21 March 2011

Jian Gong ,
Fengmei Gao ,
Yan Pan ,
Xiujun Cui ,
Lunyu Qu  and
Rongshun Wang
Jian Gong
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Fengmei Gao
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Yan Pan
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Xiujun Cui
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Lunyu Qu
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Rongshun Wang
Affiliation:
Department of Chemistry, Northeast Normal University, Changchun 130024, China
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Abstract

Poly (vinyl alcohol) (PVA)/H3PMo12O40ultra-fine fiber aggregates contained differential weight percentage of H3PMo12O40 to PVA (20, 50 and 80 wt.%, respectively) have been successfully prepared by electrospinning technique. By means of IR spectrum, wide-angle X-ray diffraction, and scanning electron microscope (SEM) techniques, the fiber aggregates were characterized. The result from scanning electron microscopy (SEM) showed that the average diameter of the fibers was between 240-900 nm. The photochromic behavior of the fiber aggregates was investigated by means of IR, UV-Vis spectra and electron spin resonance (ESR). The results showed that the Mo atom of H3PMo12O40 was reduced via one-electron step and the PVA was oxidized to unsaturated ketone after the PVA/H3PMo12O40 fiber aggregates was irradiated under UV light. The color of the fiber aggregates changed from white to blue under ultraviolet irradiation and the photochromism of the fiber aggregates was reversible in air condition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 818: Symposium M – Nanoparticles and Nanowire Building Blocks-Synthesis, Processing, Characterization and Theory , 2004 , M12.5.1
Copyright
Copyright © Materials Research Society 2004

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