期刊
ACS NANO
卷 4, 期 10, 页码 5551-5558出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn100582f
关键词
electrospinning; dichroism; nanoparticles; fibers; arrays; orientation; polymer-nanoparticle hybrids; nanocomposites; optical anisotropy; surface plasmon resonance
类别
资金
- Army Research Laboratory [CMR-CCMT332157]
- DARPA
- E. I. DuPont de Nemours Co.
- Dow Chemical Company
- State of Illinois
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
Electrospinning constitutes a simple and versatile approach of fabricating polymer heterostructures composed of nanofibers. A preferred alignment of polymer crystallites stems from complex shear elongational forces and generates a strong intrinsic optical anisotropy in typical electrospun fibers of semicrystalline polymers. While it can prove useful for certain devices, this intrinsic anisotropy can be extremely detrimental for other key applications such as high-performance polymer-based lighting and solar-energy harvesting platforms. We report a dramatic reduction in the intrinsic dichroism of electrospun poly(ethylene oxide) fibers resulting from the incorporation of inorganic nanoparticles in the polymer matrix. This effect is shown to originate from a controllable randomization of the orientational ordering of the crystalline domains in the hybrid nanofibers and not merely from a reduction in crystallinity. This improved understanding of the crystalline structure-optical property correlation then leads to a better control over the intrinsic anisotropy of electrospun fibers using localized surface-plasmon enhancement effects around metallic nanoparticles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据