硒化镉/硫化镉棒和纳米四脚合成种子

* These authors contributed equally
Chemistry
 

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Manthiram, K., Beberwyck, B. J., Talapin, D. V., Alivisatos, A. P. Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals. J. Vis. Exp. (82), e50731, doi:10.3791/50731 (2013).

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Abstract

我们展示的多组分纳米结构组成的CdS和CdSe与杆和四足动物形态的合成方法。甲种子合成策略是使用其中的CdSe的球形种子制备首先使用热喷射技术。通过控制种子的晶体结构是纤锌矿任一或闪锌矿,硫化镉在任一棒状或四角锥体形状的纳米晶体在随后的热喷射生长过的种子的结果,分别为。所合成的纳米晶体的相位和形态是使用X射线衍射和透射电子显微镜证实,这表明纳米晶体是纯相和具有一致的形态。所合成的纳米晶体的消光系数和量子产率是使用UV-Vis吸收光谱和光致发光光谱计算出。杆和四足动物展览消光系数和量子产率是比裸高种子。这表明合成的,可在纳米级通过使用种子的合成方法来实现材料的精确布置。

Materials

Name Company Catalog Number Comments
Sodium hydroxide, 98% Fisher BP359
Myristic acid, 99% Sigma Aldrich M3128
Methanol, 99.8% Fisher A412
Cadmium nitrate tetrahydrate, 99% Sigma Aldrich 20911 Highly toxic
Cadmium oxide (CdO), 99.99% Sigma Aldrich 202894 Highly toxic
1-Octadecene (ODE), 90% Sigma Aldrich O806 Technical grade
Selenium (Se), 100 mesh, 99.99% Sigma Aldrich 229865
Tri-n-octylphosphine (TOP), 97% Strem 15-6655 Air sensitive
Sulfur (S), 99.9995% Alfa Aesar 10343
Trioctylphosphine oxide (TOPO), 99% Strem 15-6661
N-Octadecylphosphonic acid (ODPA), 99% PCI Synthesis 104224
Methanol, anhydrous, 99.8% Sigma Aldrich 322415
Toluene, anhydrous, 99.8% Sigma Aldrich 244511
Chloroform, anhydrous, 99% Sigma Aldrich 288306
Acetone, 99.9% Fisher A949 Dried over 4Å sieves
Hexane, anhydrous, 95% Sigma Aldrich 296090
2-Propanol, anhydrous, 99.5% Sigma Aldrich 278475
Selenium dioxide, 99.999% Sigma Aldrich 204315
Oleic acid, 90% Sigma Aldrich 364525 Technical grade
Oleylamine, 70% Sigma Aldrich O7805 Technical grade
Propylphosphonic acid (PPA), 95% Sigma Aldrich 305685
Ethanol, anhydrous, 99.5% Sigma Aldrich 459836
Octylamine, 99% Sigma Aldrich O5802

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