TY - JOUR
T1 - Influence of Halogen-Solvent Hydrogen Bonding on Gold Nanocluster Photoluminescence
AU - Heintzelman, Daniel J.
AU - Nelson, Seth A.
AU - Knappenberger, Kenneth L.
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/3/21
Y1 - 2024/3/21
N2 - 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.
AB - 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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U2 - 10.1021/acs.jpclett.4c00197
DO - 10.1021/acs.jpclett.4c00197
M3 - Article
C2 - 38452374
AN - SCOPUS:85187395202
SN - 1948-7185
VL - 15
SP - 2951
EP - 2956
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 11
ER -