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Metal Halide Perovskite Supercrystals: Gold–Bromide Complex Triggered Assembly of CsPbBr3 Nanocubes
Langmuir ( IF 3.7 ) Pub Date : 2018-01-03 00:00:00 , DOI: 10.1021/acs.langmuir.7b03432 Kun-Hua Wang 1 , Jun-Nan Yang 1 , Qian-Kun Ni 1 , Hong-Bin Yao 1 , Shu-Hong Yu 1
Langmuir ( IF 3.7 ) Pub Date : 2018-01-03 00:00:00 , DOI: 10.1021/acs.langmuir.7b03432 Kun-Hua Wang 1 , Jun-Nan Yang 1 , Qian-Kun Ni 1 , Hong-Bin Yao 1 , Shu-Hong Yu 1
Affiliation
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Using nanocrystals as “artificial atoms” to construct supercrystals is an interesting process to explore the stacking style of nanoscale building blocks and corresponding collective properties. Various types of semiconducting supercrystals have been constructed via the assembly of nanocrystals driven by the entropic, electrostatic, or van der Waals interactions. We report a new type of metal halide perovskite supercrystals via the gold-bromide complex triggered assembly of newly emerged attractive CsPbBr3 nanocubes. Through introducing gold-bromide (Au–Br) complexes into CsPbBr3 nanocubes suspension, the self-assembly process of CsPbBr3 nanocubes to form supercrystals was investigated with the different amount of Au–Br complexes added to the suspensions, which indicates that the driven force of the formation of CsPbBr3 supercrystals included the van der Waals interactions among carbon chains and electrostatic interactions between Au–Br complexes and surfactants. Accordingly, the optical properties change with the assembly of CsPbBr3 nanocubes and the variation of mesoscale structures of supercrystals with heating treatment was revealed as well, demonstrating the ionic characteristics of CsPbBr3 nanocrystals. The fabricated CsPbBr3 supercrystal presents a novel type of semiconducting supercrystals that will open an avenue for the assembly of ionic nanocrystals.
中文翻译：
金属卤化物钙钛矿超晶体：金溴化物引发的CsPbBr 3纳米立方体组装。
使用纳米晶体作为“人造原子”来构造超晶体是探索纳米级构建块的堆叠样式和相应的集合特性的有趣过程。通过由熵，静电或范德华相互作用驱动的纳米晶体的组装，已经构造了各种类型的半导体超晶体。我们报告了一种新型的金属卤化物钙钛矿超晶体，通过金溴化物络合物触发了新出现的有吸引力的CsPbBr 3纳米立方体的组装。通过引入金-溴化物（AU -溴）配合到CsPbBr 3个纳米立方体悬浮液，CsPbBr的自组装过程3在悬浮液中加入不同量的Au-Br配合物后，研究了形成超晶的纳米立方体，这表明CsPbBr 3超晶形成的驱动力包括碳链之间的范德华相互作用和Au-Br配合物之间的静电相互作用和表面活性剂。因此，光学特性与组件CsPbBr的改变3纳米立方体，并用加热处理supercrystals的尺度结构的变化被揭露为好，表明CsPbBr的离子特性3纳米晶体。制成的CsPbBr 3超晶呈现出新型的半导体超晶，这将为离子纳米晶的组装开辟道路。
更新日期：2018-01-03
中文翻译：
金属卤化物钙钛矿超晶体：金溴化物引发的CsPbBr 3纳米立方体组装。
使用纳米晶体作为“人造原子”来构造超晶体是探索纳米级构建块的堆叠样式和相应的集合特性的有趣过程。通过由熵，静电或范德华相互作用驱动的纳米晶体的组装，已经构造了各种类型的半导体超晶体。我们报告了一种新型的金属卤化物钙钛矿超晶体，通过金溴化物络合物触发了新出现的有吸引力的CsPbBr 3纳米立方体的组装。通过引入金-溴化物（AU -溴）配合到CsPbBr 3个纳米立方体悬浮液，CsPbBr的自组装过程3在悬浮液中加入不同量的Au-Br配合物后，研究了形成超晶的纳米立方体，这表明CsPbBr 3超晶形成的驱动力包括碳链之间的范德华相互作用和Au-Br配合物之间的静电相互作用和表面活性剂。因此，光学特性与组件CsPbBr的改变3纳米立方体，并用加热处理supercrystals的尺度结构的变化被揭露为好，表明CsPbBr的离子特性3纳米晶体。制成的CsPbBr 3超晶呈现出新型的半导体超晶，这将为离子纳米晶的组装开辟道路。
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