Highly luminescent quantum-dot monoliths
Highly luminescent quantum-dot monoliths
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DOI：
10.1021/ja066749c
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发表时间：
2007-02-21
影响因子：
15
通讯作者：
Brock, Stephanie L.
中科院分区：
文献类型：
--
作者：
Arachchige, Indika U.;Brock, Stephanie L.
通过氧化去除预先形成的核/壳颗粒中的表面硫醇盐配体，合成了具有高发光度的大型（毫米-厘米）独立式CdSe/ZnS核/壳量子点网络（凝胶、干凝胶和气凝胶）。与从“裸”CdSe纳米颗粒制备的类似的发射性差的网络相反，在3-D连接的固体中的量子限制的程度是前体颗粒尺寸的函数，并且对网络密度几乎没有依赖性。
Large (mm-cm) free-standing CdSe/ZnS core/shell quantum-dot networks (gels, xerogels, and aerogels) with high luminosity have been synthesized by oxidative removal of surface thiolate ligands from preformed core/shell particles. In contrast to analogous poorly emissive networks prepared from "naked" CdSe nanoparticles, the extent of quantum confinement in the 3-D connected solid is a function of the precursor particle size and shows little dependence on the network density.