The photoluminescence enhancement of electrospun poly(ethylene oxide) fibers with CdS and polyaniline inoculations

被引：17

作者：

Yu, Guo ^{[1
]}

Li, Xiaohong ^{[1
]}

Cai, Xiaojun ^{[1
]}

Cui, Wenguo ^{[1
]}

Zhou, Shaobing ^{[1
]}

Weng, Jie ^{[1
]}

机构：

[1] SW Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China

来源：

ACTA MATERIALIA | 2008年 / 56卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Electrospinning; Quantum dots; Cadmium sulfide; Polyaniline; Photoluminescence;

D O I：

10.1016/j.actamat.2008.07.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Blending electrospinning of cadmium sulfide (CdS) quantum dots (QD) with poly(ethylene oxide) (PEO) solution was employed to fabricate one-dimensional ultrafine fibers with an average diameter of 450 nm. This study focused oil systematic investigations into the role of the matrix polymer and the optimal electrospinning parameters for enhancing the photoluminescence properties of fibrous composites. CdS QDs showed a homogeneous distribution within the composite fibers, and fluorescence spectra showed that PEO successfully passivated the interlace defects and quenched the visible emission of CdS QDs. The QDs concentration and electrospinning voltage were found to play important roles in enhancing the passivation effect of PEO and adjusting the photoluminescence intensity of the composite fibers. Furthermore, the addition of polyaniline enhanced the photoluminescence intensity of the electrospun fibers, and an electron-hole mechanism was proposed. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5775 / 5782

页数：8

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