A1 Journal article (refereed)
Robust, Highly Luminescent Au13 Superatoms Protected by N-Heterocyclic Carbenes (2019)


Narouz, Mina R.; Takano, Shinjiro; Lummis, Paul A.; Levchenko, Tetyana I.; Nazemi, Ali; Kaappa, Sami; Malola, Sami; Yousefalizadeh, Goonay; Calhoun, Larry A.; Stamplecoskie, Kevin G. et al. (2019). Robust, Highly Luminescent Au13 Superatoms Protected by N-Heterocyclic Carbenes. Journal of the American Chemical Society, 141 (38), 14997-15002. DOI: 10.1021/jacs.9b07854


JYU authors or editors


Publication details

All authors or editors: Narouz, Mina R.; Takano, Shinjiro; Lummis, Paul A.; Levchenko, Tetyana I.; Nazemi, Ali; Kaappa, Sami; Malola, Sami; Yousefalizadeh, Goonay; Calhoun, Larry A.; Stamplecoskie, Kevin G.; et al.

Journal or series: Journal of the American Chemical Society

ISSN: 0002-7863

eISSN: 1520-5126

Publication year: 2019

Volume: 141

Issue number: 38

Pages range: 14997-15002

Publisher: American Chemical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1021/jacs.9b07854

Open Access: Publication channel is not openly available

Publication channel open access:

Publication open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65528


Abstract

Gold superatom nanoclusters stabilized entirely by N-heterocyclic carbenes (NHCs) are reported. The reduction of well-defined NHC–Au–Cl complexes produces clusters com-prised of an icosahedral Au13 core surrounded by a symmetrical arrangement of 9 NHCs and 3 chlorides. X-ray crystallography shows that the clusters are characterized by multiple CH–π and π–π interactions, which rigidify the ligand and likely con-tribute to the exceptionally high photoluminescent quantum yields observed, up to 16.0 %, which is significantly greater than the most luminescent ligand-protected Au13 superatom cluster. Density functional theory analysis suggests that clus-ters are 8-electron superatoms with a wide HOMO-LUMO energy gap of 2 eV. Consistent with this, the clusters have high stability relative to all-phosphine clusters.


Keywords: nanoparticles; x-ray crystallography

Free keywords: nanoclusters; gold superatom nanoclusters; crystallography


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 3


Last updated on 2020-18-08 at 13:33