Chiral 38-Gold-Atom Nanoclusters: Synthesis and Chiroptical Properties

Chiral 38-Gold-Atom Nanoclusters: Synthesis and Chiroptical Properties

Enantioselective synthesis of chiral Au38 nanoclusters is achieved with chiral 2‐phenylpropane‐1‐thiol (abbreviated as R/S‐PET, organic soluble), captopril and glutathione (water soluble) as the respective ligand. The circular dichroism (CD) spectra of Au38(R‐PET)24 and Au38(S‐PET)24 show multiple b...

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Veröffentlicht in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2014-03, Vol.10 (5), p.1008-1014
Hauptverfasser: Xu, Qian, Kumar, Santosh, Jin, Shenshen, Qian, Huifeng, Zhu, Manzhou, Jin, Rongchao
Format: Artikel
Sprache:eng
Schlagworte:
Au38
Captopril
chiral
Dichroism
enantiomers
enantioselective
Ligands
nanoclusters
Nanostructure
Nanotechnology
Shells
Spectra
Synthesis
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Zusammenfassung:Enantioselective synthesis of chiral Au38 nanoclusters is achieved with chiral 2‐phenylpropane‐1‐thiol (abbreviated as R/S‐PET, organic soluble), captopril and glutathione (water soluble) as the respective ligand. The circular dichroism (CD) spectra of Au38(R‐PET)24 and Au38(S‐PET)24 show multiple bands which are precisely mirror‐imaged, while their normal optical absorption spectra are identical with each other and also superimposable with that of the racemic Au38(SCH2CH2Ph)24 nanoclusters. The observed CD signals are not from the chiral ligands themselves (which only give rise to CD signals in the UV (
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201302279