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Self‐Assembly of Chiral Gold Clusters into Crystalline Nanocubes of Exceptional Optical Activity
Author(s) -
Shi Lin,
Zhu Lingyun,
Guo Jun,
Zhang Lijuan,
Shi Yanan,
Zhang Yin,
Hou Ke,
Zheng Yonglong,
Zhu Yanfei,
Lv Jiawei,
Liu Shaoqin,
Tang Zhiyong
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201709827
Subject(s) - stacking , intramolecular force , circular dichroism , materials science , luminescence , self assembly , nanoparticle , crystallography , optical rotation , chemical physics , chirality (physics) , nanotechnology , chiral symmetry , chemistry , optoelectronics , stereochemistry , physics , organic chemistry , nambu–jona lasinio model , quantum mechanics , quark
Abstract Self‐assembly of inorganic nanoparticles into ordered structures is of interest in both science and technology because it is expected to generate new properties through collective behavior; however, such nanoparticle assemblies with characteristics distinct from those of individual building blocks are rare. Herein we use atomically precise Au clusters to make ordered assemblies with emerging optical activity. Chiral Au clusters with strong circular dichroism (CD) but free of circularly polarized luminescence (CPL) are synthesized and organized into uniform body‐centered cubic (BCC) packing nanocubes. Once the ordered structure is formed, the CD intensity is significantly enhanced and a remarkable CPL response appears. Both experiment and theory calculation disclose that the CPL originates from restricted intramolecular rotation and the ordered stacking of the chiral stabilizers, which are fastened in the crystalline lattices.