Influence of Halogen-Solvent Hydrogen Bonding on Gold Nanocluster Photoluminescence.
J Phys Chem Lett
; 15(11): 2951-2956, 2024 Mar 21.
Article
em En
| MEDLINE
| ID: mdl-38452374
ABSTRACT
The influence of gold nanocluster-solvent interactions on nanostructure optical properties was determined. Using [Au11(BINAP)4X2]+, where X = Cl or Br, as a model system, the dramatic influence of halogen-solvent hydrogen bonding on nanocluster optical properties was resolved. The creation of a nanocluster-solvent hydrogen-bond network yielded intense photoluminescence (PL) and an accompanying 2-fold reduction in vibration-mediated nonradiative decay rates. PL was quenched for systems that did not support hydrogen bonding. As reflected by absorption line widths, Raman scattering, and transient absorption spectroscopy measurements, the hydrogen-bond network increased nanocluster structural rigidity and reduced nonradiative carrier decay rates. The results highlight the significant role of the nanocluster-solvent interface in determining the properties of structurally precise materials.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article