In:
Angewandte Chemie, Wiley, Vol. 132, No. 21 ( 2020-05-18), p. 8347-8353
Abstract:
Ligand‐induced surface restructuring with heteroatomic doping is used to precisely modify the surface of a prototypical [Au 25 (SR 1 ) 18 ] − cluster ( 1 ) while maintaining its icosahedral Au 13 core for the synthesis of a new bimetallic [Au 19 Cd 3 (SR 2 ) 18 ] − cluster ( 2 ). Single‐crystal X‐ray diffraction studies reveal that six bidentate Au 2 (SR 1 ) 3 motifs (L2) attached to the Au 13 core of 1 were replaced by three quadridentate Au 2 Cd(SR 2 ) 6 motifs (L4) to create a bimetallic cluster 2 . Experimental and theoretical results demonstrate a stronger electronic interaction between the surface motifs (Au 2 Cd(SR 2 ) 6 ) and the Au 13 core, attributed to a more compact cluster structure and a larger energy gap of 2 compared to that of 1 . These factors dramatically enhance the photoluminescence quantum efficiency and lifetime of crystal of the cluster 2 . This work provides a new route for the design of a wide range of bimetallic/alloy metal nanoclusters with superior optoelectronic properties and functionality.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v132.21
DOI:
10.1002/ange.202001034
Language:
English
Publisher:
Wiley
Publication Date:
2020
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