Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

Xuanwei Ong; Shashank Gupta; Wen-Ya Wu; Sabyasachi Chakrabortty; Yinthai Chan

doi:10.3791/56009

JoVE Journal
Chemistry

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JoVE Journal Chemistry

Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

形状-各向异性胶体镉硫纳米结构的 Facet-to-facet 连接

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09:12 min

August 10, 2017

DOI: 10.3791/56009-v

Xuanwei Ong*¹, Shashank Gupta*¹, Wen-Ya Wu², Sabyasachi Chakrabortty¹, Yinthai Chan^1,3

¹Department of Chemistry,National University of Singapore, ²Materials Processing and Characterisation Department,A*STAR, Institute of Materials Research and Engineering, ³Ceramics Department,A*STAR, Institute of Materials Research and Engineering

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本协议详细介绍了形状-各向异性胶体镉硫纳米晶如何通过它们的端面进行共价键连接。

该合成方案的总体目标是通过定向连接过程将胶体形状各向异性半导体纳米晶体面对面连接起来。虽然这种方法有可能解决基于胶体纳米颗粒的光电领域的关键问题，例如需要在保持溶液处理能力的同时改善颗粒间电荷传输。该技术的主要优点是 facet-to-facet 连接过程可以应用于各种形状和大小的半导体纳米颗粒。

当我们在某些反应和条件下观察到形状各向异性半导体纳米晶进行交换反应时出现定向附着的迹象时，我们第一次有了这种方法的想法。演示该程序的是我实验室的研究生 Xuanwei Ong 和 Shashank Gupta。首先，将 TOPO、氧化镉、己基膦酸和十八烷基膦酸加入 15 mL、三颈圆底烧瓶中。

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化学问题 126 定向组装合成胶体纳米晶半导体阳离子交换小平面面向方面定向附件