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[期刊论文]

'Passivated Precursor' Approach to All-Alkynyl-Protected Gold Nanoclusters and Total Structure Determination of Au130

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author:

Lei, Zhen (Lei, Zhen.) [1] (Scholars:雷振) | Zhao, Pei (Zhao, Pei.) [2] | Guan, Zong-Jie (Guan, Zong-Jie.) [3] | Unfold

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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 equivalent to CR)(18) (R=-C6H4-2-F), Au-36(C equivalent to CR)(24), Au-44(C equivalent to CR)(28), Au-130(C equivalent to CR)(50), and Au-144(C equivalent to 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 Au-130(C equivalent to CR)(50) is revealed, which presents important information for understanding the structure of the mysterious Au-130 nanoclusters. Theoretical calculations indicated Au-130(C equivalent to CR)(50) has a smaller HOMO-LUMO gap than Au-130(S-C6H4-4-CH3)(50). This facile and reliable synthetic approach will greatly accelerate further studies on all-alkynyl-protected gold nanoclusters.

Keyword:

Alkynyl ligands Cluster compounds Gold Silica gel column chromatography Structure determination

Community:

  • [ 1 ] [Lei, Zhen]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
  • [ 2 ] [Guan, Zong-Jie]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
  • [ 3 ] [Nan, Zi-Ang]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
  • [ 4 ] [Wang, Quan-Ming]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
  • [ 5 ] [Zhao, Pei]Inst Mol Sci, Res Ctr Computat Sci, 444-8585 Myodaiji, Okazaki, Aichi 4448585, Japan
  • [ 6 ] [Ehara, Masahiro]Inst Mol Sci, Res Ctr Computat Sci, 444-8585 Myodaiji, Okazaki, Aichi 4448585, Japan
  • [ 7 ] [Lei, Zhen]Fuzhou Univ, Coll Chem, Fujian Prov Key Lab Adv Inorgan Oxygenated Mat, Fuzhou 350108, Peoples R China

Reprint 's Address:

  • [Wang, Quan-Ming]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;;[Ehara, Masahiro]Inst Mol Sci, Res Ctr Computat Sci, 444-8585 Myodaiji, Okazaki, Aichi 4448585, Japan;;

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Source :

CHEMISTRY-A EUROPEAN JOURNAL

ISSN: 0947-6539

Year: 2024

Issue: 42

Volume: 30

3 . 9 0 0

JCR@2023

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

30 Days PV: 2

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