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Presentation by Dr Mark Allendorf from the Center for Biological and Materials Science, Sandia National Laboratories, Livermore, California

Title "Nanoporosity and the Welcome Guest: Developing Metal-Organic Frameworks for Electronic Device Applications"
When Sep 09, 2013
from 11:00 AM to 12:30 PM
Where Goldsmiths1, 27 Charles Babbage Road
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Abstract

Metal-Organic Frameworks (MOF)s are crystalline materials in which metal ions or metal‐ion clusters are linked by rigid organic molecules, creating a   supramolecular network that has permanent porosity.  Unwanted “guest” species, which can be solvent molecules or residual reactant, can be removed without structural collapse.  Once a MOF is activated in this way, it provides a highly ordered, chemically tailorable structure that could serve as an active component of electronic devices such as sensors, light‐emitting diodes, and energy-harvesting or storage systems.  The vast majority of MOF research to date, however, focuses on “traditional” applications of microporous materials, such as gas storage and separations.  In this presentation, I will discuss our efforts to create hybrid MOFs, in which a “welcome guest,” i.e., one that we deliberately introduce into the pores or a molecule we wish to detect, creates new functionality relevant to various electronic device applications or induces ameasureable signal.  Using this approach, we developed MOF-based materials for radiation detection and chemical sensing.  Our very recent efforts to develop MOFs for photovoltaic applications also will be described; in particular, new approaches for creating electronically conducting MOFs.