Functional Molecular and Nanoscale Materials: 1. Metalloporphyrazine and Dimetal
Carboxylate Liquid Crystals and Oligomers: Synthesis, Electronic Spectroscopy, and
Magnetic Properties. 2. Nanocomposites and Nanoactuators.
Brian Pate, MIT
Molecular materials based on metalloporphyrazines (M = Co, Ni, Cu, Zn) and dimetal
carboxylates (M, M' = Mo, W) exhibit a variety of interesting optoelectronic and
magnetic properties, and are amenable to study by magnetic resonance and scattering
methods. The preparation and structure of metalloporphyrazine columnar liquid crystals
will be described, together with some aspects of their metal-dependent rheology and
response to applied magnetic fields. The oligomerization of
Mo2, W2, and MoW units
with dicarboxylate bridging groups will also be discussed, and a study of the metal- and
bridge-dependent communication between the dimetal units of the mixed-valence dimers
will be presented. Finally, some aspects of current work in progress at the Institute for
Soldier Nanotechnologies at MIT will be described, with an emphasis on the application
of scattering methods to (a) composites of inorganic nanoparticles and block copolymers
and (b) nanostructured polymeric actuators.
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