Chiral Surface and Geometry of Metal Nanocrystals.,Advanced Materials

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Chiral Surface and Geometry of Metal Nanocrystals.
Advanced Materials ( IF 27.4 ) Pub Date : 2019-12-13 , DOI: 10.1002/adma.201905758
Sang Won Im ₁ , Hyo-Yong Ahn ₁ , Ryeong Myeong Kim ₁ , Nam Heon Cho ₁ , Hyeohn Kim ₁ , Yae-Chan Lim ₁ , Hye-Eun Lee ₁ , Ki Tae Nam ₁

Affiliation

Chirality is a basic property of nature and has great importance in photonics, biochemistry, medicine, and catalysis. This importance has led to the emergence of the chiral inorganic nanostructure field in the last two decades, providing opportunities to control the chirality of light and biochemical reactions. While the facile production of 3D nanostructures has remained a major challenge, recent advances in nanocrystal synthesis have provided a new pathway for efficient control of chirality at the nanoscale by transferring molecular chirality to the geometry of nanocrystals. Interestingly, this discovery stems from a purely crystallographic outcome: chirality can be generated on high‐Miller‐index surfaces, even for highly symmetric metal crystals. This is the starting point herein, with an overview of the scientific history and a summary of the crystallographic definition. With the advance of nanomaterial synthesis technology, high‐Miller‐index planes can be selectively exposed on metallic nanoparticles. The enantioselective interaction of chiral molecules and high‐Miller‐index facets can break the mirror symmetry of the metal nanocrystals. Herein, the fundamental principle of chirality evolution is emphasized and it is shown how chiral surfaces can be directly correlated with chiral morphologies, thus serving as a guide for researchers in chiral catalysts, chiral plasmonics, chiral metamaterials, and photonic devices.

中文翻译：

金属纳米晶体的手性表面和几何形状。

手性是自然的基本属性，在光子学，生物化学，医学和催化领域具有重要意义。在过去的二十年中，这种重要性导致了手性无机纳米结构领域的出现，为控制光和生化反应的手性提供了机会。尽管如何轻松地生产3D纳米结构仍然是一个主要挑战，但纳米晶体合成的最新进展为通过将分子手性传递到纳米晶体的几何结构上，有效控制了纳米级的手性提供了一条新途径。有趣的是，这一发现源于纯粹的晶体学结果：即使对于高度对称的金属晶体，手性也可以在高米勒指数的表面上产生。这是这里的起点，概述了科学历史并总结了晶体学定义。随着纳米材料合成技术的进步，高米勒指数平面可以选择性地暴露在金属纳米粒子上。手性分子与米勒指数高的小面的对映选择性相互作用可以破坏金属纳米晶体的镜像对称性。在此，强调了手性进化的基本原理，并说明了手性表面如何与手性形态直接相关，从而为手性催化剂，手性等离子体，手性超材料和光子器件的研究人员提供了指南。手性分子与米勒指数高的小面的对映选择性相互作用可以破坏金属纳米晶体的镜像对称性。在此，强调了手性进化的基本原理，并说明了手性表面如何与手性形态直接相关，从而为手性催化剂，手性等离子体，手性超材料和光子器件的研究人员提供了指南。手性分子与米勒指数高的小面的对映选择性相互作用可以破坏金属纳米晶体的镜像对称性。在此，强调了手性进化的基本原理，并说明了手性表面如何与手性形态直接相关，从而为手性催化剂，手性等离子体，手性超材料和光子器件的研究人员提供了指南。

更新日期：2019-12-13

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