Joodeok Kim, Sungsu Kang, Fanrui Cheng, Yi Wang, Xingchen Ye, Jungwon Park
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引用次数: 0
Abstract
Over the last several decades, colloidal nanoparticles have evolved into a prominent class of building blocks for materials design. Important advances include the synthesis of uniform nanoparticles with tailored compositions and properties, and the precision construction of intricate, higher-level structures from nanoparticles via self-assembly. Grasping the modern complexity of nanoparticles and their superstructures requires fundamental understandings of the processes of nanoparticle growth and self-assembly. In situ liquid phase transmission electron microscopy (TEM) has significantly advanced our understanding of these dynamic processes by allowing direct observation of how individual atoms and nanoparticles interact in real time, in their native phases. In this article, we highlight diverse nucleation and growth pathways of nanoparticles in solution that could be elucidated by the in situ liquid phase TEM. Furthermore, we showcase in situ liquid phase TEM studies of nanoparticle self-assembly pathways, highlighting the complex interplay among nanoparticles, ligands, and solvents. The mechanistic insights gained from in situ liquid phase TEM investigation could inform the design and synthesis of novel nanomaterials for various applications such as catalysis, energy conversion, and optoelectronic devices.
在过去的几十年里,胶体纳米粒子已发展成为材料设计中的一类重要构件。重要的进展包括合成具有定制成分和特性的均匀纳米粒子,以及通过自组装从纳米粒子精确构建复杂的高级结构。要掌握纳米粒子及其超结构的现代复杂性,就必须从根本上了解纳米粒子的生长和自组装过程。原位液相透射电子显微镜(TEM)通过直接观察单个原子和纳米粒子在其原生相中如何实时相互作用,极大地推动了我们对这些动态过程的理解。在本文中,我们重点介绍了原位液相 TEM 可以阐明的溶液中纳米粒子的各种成核和生长途径。此外,我们还展示了纳米粒子自组装途径的原位液相 TEM 研究,突出了纳米粒子、配体和溶剂之间复杂的相互作用。从原位液相 TEM 研究中获得的机理见解可为设计和合成新型纳米材料提供参考,这些材料可用于催化、能量转换和光电器件等多种应用领域。
期刊介绍:
MRS Bulletin is one of the most widely recognized and highly respected publications in advanced materials research. Each month, the Bulletin provides a comprehensive overview of a specific materials theme, along with industry and policy developments, and MRS and materials-community news and events. Written by leading experts, the overview articles are useful references for specialists, but are also presented at a level understandable to a broad scientific audience.