Synthesis and Properties of Water-Soluble Silica-Coated ZnSe/ZnS Semiconductor Quantum Dots

被引：7
作者：
Chen, Xiuxiu [1 ]
Liu, Futian [1 ]
Jiang, Qinghui [1 ]
Sun, Li [1 ]
Wang, Qun [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
来源：
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | 2012年 / 22卷 / 01期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Quantum dots; Multicore; Luminescence; Silica-coatings; CDTE NANOCRYSTALS; LUMINESCENT; NANOPARTICLES; GROWTH; SPHERES;
D O I：
10.1007/s10904-011-9606-3
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Silica encapsulated ZnSe/ZnS quantum dots (QDs) are prepared via a sol-gel method by hydrolyzing tetraethyl orthosilicate (TEOS) on the surface of the QDs. The photoluminescence (PL) intensity of ZnS coated ZnSe QDs is more than three times that of ZnSe QDs. By partial interchange of the capping ligand from thioglycolic acid (TGA) to 3-mercaptopropyltri-methoxysilane (MPS) on the QDs, initial PL efficiency of the QDs in water was retained. The average size and morphology of the multicore-shell structured ZnSe/ZnS@SiO2 can be controlled by varying MPS and TEOS concentration.
引用
收藏
页码：6 / 11
页数：6
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