Chiral Surface and Geometry of Metal Nanocrystals

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 biochemica...

Full description

Saved in:
Bibliographic Details
Published in:Advanced materials (Weinheim) 2020-10, Vol.32 (41), p.e1905758-n/a
Main Authors: Im, Sang Won, Ahn, Hyo‐Yong, Kim, Ryeong Myeong, Cho, Nam Heon, Kim, Hyeohn, Lim, Yae‐Chan, Lee, Hye‐Eun, Nam, Ki Tae
Format: Article
Language:English
Subjects:
Catalysis
chiral inorganics
Chirality
Crystallography
Enantiomers
high‐Miller‐index facets
Materials science
Metal crystals
metal nanocrystals
Metamaterials
Nanocrystals
Nanomaterials
nanoparticle synthesis
Nanoparticles
Nanostructure
Photonics
Symmetry
Synthesis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. The fundamentals needed to crystallographically define the surface chirality in metal are summarized, and synthetic strategies to produce the corresponding chiral geometries by controlling chiral high‐Miller‐index facets are provided. The surface and overall geometry are linked, and thus a guide for producing various chiral metallic nanoparticles for metamaterials, biosensors, catalysts, and optical applications is given.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201905758