1. 'Passivated Precursor' Approach to All-Alkynyl-Protected Gold Nanoclusters and Total Structure Determination of Au 130 .
- Author
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Lei Z, Zhao P, Guan ZJ, Nan ZA, Ehara M, and Wang QM
- Abstract
A 'passivated precursor' approach is developed for the efficient synthesis and isolation of all-alkynyl-protected gold nanoclusters. Direct reduction of dpa-passivated precursor Au-dpa (Hdpa=2,2'-dipyridylamine) in one-pot under ambient conditions gives a series of clusters including Au
22 (C≡CR)18 (R=-C6 H4 -2-F), Au36 (C≡CR)24 , Au44 (C≡CR)28 , Au130 (C≡CR)50 , and Au144 (C≡CR)60 . These clusters can be well separated via column chromatography. The overall isolation yield of this series of clusters is 40 % (based on gold), which is much improved in comparison with previous approaches. It is notable that the molecular structure of the giant cluster Au130 (C≡CR)50 is revealed, which presents important information for understanding the structure of the mysterious Au130 nanoclusters. Theoretical calculations indicated Au130 (C≡CR)50 has a smaller HOMO-LUMO gap than Au130 (S-C6 H4 -4-CH3 )50 . This facile and reliable synthetic approach will greatly accelerate further studies on all-alkynyl-protected gold nanoclusters., (© 2024 Wiley-VCH GmbH.)- Published
- 2024
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