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Self-Assembly of Chiral Gold Clusters into Crystalline Nanocubes of Exceptional Optical Activity.
- Source :
- Angewandte Chemie International Edition; 11/27/2017, Vol. 56 Issue 48, p15397-15401, 5p
- Publication Year :
- 2017
-
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. [ABSTRACT FROM AUTHOR]
- Subjects :
- GOLD clusters
CRYSTAL structure
OPTICAL rotation
NANOPARTICLES
CIRCULAR dichroism
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 56
- Issue :
- 48
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 126404281
- Full Text :
- https://doi.org/10.1002/anie.201709827