One-pot, large-scale synthesis silica-encapsulated NIR alloy quantum dots CdSeTe within short time
One-pot, large-scale synthesis silica-encapsulated NIR alloy quantum dots CdSeTe within short time
复制标题
短时间内一锅法大规模合成二氧化硅封装近红外合金量子点CdSeTe
DOI：
10.1007/s11051-014-2448-5
复制
发表时间：
2014-05
期刊：
影响因子：
--
通讯作者：
Cuiling Ren, Haosen Yuan,Yifang Yang, Hongli Chen
中科院分区：
文献类型：
--
作者：
Cuiling Ren, Haosen Yuan,Yifang Yang, Hongli Chen
硅基近红外荧光材料在生物领域的应用备受关注。但目前制备二氧化硅包覆近红外量子点的方法普遍存在耗时长、一批产品数量少等缺点。在此，我们提出了一种快速，简便的一锅水相路线，制备近红外发射的二氧化硅封装的碲化镉量子点在大规模。系统地研究了封端剂、反应时间、pH值等实验条件对所得杂化量子点发光性能的影响，并采用X射线衍射、透射电镜、荧光光谱和X射线能量色散谱对产物进行了表征。在优化的条件下，可在10 h内得到二氧化硅包覆的近红外发光量子点。一批产量为3.70 g。最终产物为球形，平均粒径约为15 nm。
Silica-based near-infrared fluorescent materials in biological application have attracted much attention. But the current methods for preparing silica-encapsulated near-infrared radiation (NIR) quantum dots (QDs) are commonly time-consuming and can only obtain a few products in one batch. Herein, we present a fast and facile one-pot aqueous-phase route to prepare NIR-emitting silica-encapsulated CdSeTe QDs at large scale. The influences of various experimental conditions on the luminescent properties of the obtained silica hybrids QDs have been systematically investigated, such as capping agent, reaction time, pH value and so on. The final product has been characterized by X-ray diffraction, transmission electron microscope, photoluminescent spectra and energy dispersive x-ray spectroscopy (EDX). The silica-coated NIR-emitting QDs can be obtained within 10 h under the optimized conditions. The yield is 3.70 g in one batch. The final product is spherical with an average particle size around 15 nm.
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影响因子：
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作者：
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