Here, we report the synthesis and experimental and theoretical characterizations of Au36−xAgx(SPh-tBu)24 alloy nanomolecule to atomic precision. By changing the incoming gold-to-silver metal ratio during the synthesis of crude mixture, up to eight silver atoms can be incorporated into Au36(SPhtBu) 24, as theoretically confirmed and rationalized in terms of its core and staple structure. Tuning of optical response by Ag doping is strongly affected by aromatic conjugation and qualitatively different with respect to the aliphatic case, with a strikingly nonmonotonic behavior of absorption intensity in the low- and high-energy regions, in fair agreement with theoretical predictions, as rationalized via an original analysis tool: independent component mapping of oscillatory strength plots.

Principles of Optical Spectroscopy of Aromatic Alloy Nanomolecules: Au36-xAgx(SPh-tBu)24

Stener, Mauro;
2018-01-01

Abstract

Here, we report the synthesis and experimental and theoretical characterizations of Au36−xAgx(SPh-tBu)24 alloy nanomolecule to atomic precision. By changing the incoming gold-to-silver metal ratio during the synthesis of crude mixture, up to eight silver atoms can be incorporated into Au36(SPhtBu) 24, as theoretically confirmed and rationalized in terms of its core and staple structure. Tuning of optical response by Ag doping is strongly affected by aromatic conjugation and qualitatively different with respect to the aliphatic case, with a strikingly nonmonotonic behavior of absorption intensity in the low- and high-energy regions, in fair agreement with theoretical predictions, as rationalized via an original analysis tool: independent component mapping of oscillatory strength plots.
File in questo prodotto:
File Dimensione Formato  
jpcc122_4524.pdf

Accesso chiuso

Tipologia: Documento in Versione Editoriale
Licenza: Copyright Editore
Dimensione 2.38 MB
Formato Adobe PDF
2.38 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
jp8b00556_si_001.pdf

Accesso chiuso

Descrizione: Supporting information
Tipologia: Altro materiale allegato
Licenza: Copyright Editore
Dimensione 757.21 kB
Formato Adobe PDF
757.21 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2922729
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 27
social impact