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SUMMARY:Using 1H NMR Spectroscopy to Study Surface Dynamics of Metal Nanocl
 usters
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20231110T160000
UID:2026-08-19-23-07-20@natsci.colostate.edu
DTSTAMP:20260819T230720
Description:Abstract:\n\nAtomically precise metal nanoclusters (MNCs) are a
  class of materials sharing properties with molecular complexes and bulk n
 anoparticles. Their structure consists of a metal core and an organometall
 ic ligand shell comprised of multiple MxRx+1 staple motifs\, where M is a 
 metal and R is an organic ligand. In the context of self-assembled materia
 ls\, MNCs are attractive due to their high monodispersity brough upon by t
 heir atomic precision. This in turn may limit the number of defects that a
 re otherwise present in larger plasmonic nanoparticle assembled materials.
  However\, the surface of MNCs is quite dynamic\, for the surface ligands 
 readily undergo ligand exchange reactions that can alter the structure and
  function of the MNCs. Understanding the dynamic surface is crucial to ach
 ieve higher-order self-assembled materials. There are many ways to study M
 NC surface dynamics\, but 1H NMR provides highly sensitive structural info
 rmation about the organometallic ligand shell. Recent work from Thomas Bü
 rgi’s group at the University of Geneva utilizes variable temperature 1H
  NMR and 2D Exchange Spectroscopy to study the intercluster and interligan
 d dynamics of a model silver nanocluster species ([Ag25(DMBT)18]-). This w
 ork gives insight into how the ligand shell impacts the stability of the M
 NCs\, with further details to be presented during this talk. 4:00 pm
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