Nanocrystal Aerogels with Coupled or Decoupled Building Blocks

Nanocrystal Aerogels with Coupled or Decoupled Building Blocks
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具有耦合或解耦合构件的纳米晶体气凝胶

DOI:
10.1021/acs.jpclett.9b02695
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发表时间:
2019
期刊:
The Journal of Physical Chemistry Letters
影响因子:
--
通讯作者:
N. C. Bigall
N. C. Bigall
中科院分区:
--
文献类型:
--
作者:
P. Rusch;B. Schremmer;C. Strelow;A. Mews;D. Dorfs;N. C. Bigall

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通过选择性地连接或隔离网络内部的构建块,从而在它们的光学和电子特性方面耦合和解耦它们,来研究基于纳米颗粒的气凝胶网络结构中颗粒间接触的影响。这是通过调整合成顺序和交换壳生长点和颗粒组装点来实现的,导致两种明显不同的结构,如通过电子显微镜检查的。通过对所产生的结构的光学性质的彻底检查,证明了纳米/微观结构和宏观光学性质之间的明确相关性。温度相关的测量和有效质量近似计算支持我们的研究结果。
The influence of interparticle contact in nanoparticle-based aerogel network structures is investigated by selectively connecting or isolating the building blocks inside of the network, thereby coupling and decoupling them in regards to their optical and electronic properties. This is achieved by tuning the synthesis sequence and exchanging the point of shell growth and the point of particle assembly, leading to two distinctly different structures as examined by electron microscopy. By thorough examination of the resulting optical properties of the generated structures, the clear correlation between nanoscopic/microscopic structure and macroscopic optical properties is demonstrated. Temperature-dependent measurements and effective mass approximation calculations support our findings.
核壳增强网络纳米结构的多功能途径。
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