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BPN876: Metal-Organic Frameworks: A Highly Tunable Class of Materials for Chemical Sensing with High Selectivity

Project ID BPN876
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Start Date Tue 2017-Aug-15 09:33:31
Last Updated Tue 2017-Aug-15 12:03:03
Abstract A classic challenge in gas sensing is tunability of sensing material to suit the specific application. A new class of materials, metal-organic frameworks (MOFs), can take on thousands of forms, each with unique properties. Metal-organic frameworks are comprised of metal-cluster nodes connected by organic linkers. Changing the metal cluster or the organic linker can modulate the sensing response by at least two mechanisms: one, the metal cluster determines what gasses can bind to the material, and second, the length and functional groups of the organic linker control which gasses can enter the MOF. Guest molecules diffuse through the material and modulate the MOF’s surface potential, which can be sensed by a device, such as CS-FET (developed by Dr. Hossain Fahad and Prof. Ali Javey). Recent progress shows that the MOF sensing layer is sensitive to acidic gases, e.g., NO2, and has an ultra-low power requirement. Future work will focus on growing a library of synthesis techniques and gas sensing responses to target different applications.
Status New
Funding Source State
IAB Research Area Physical Sensors & Devices
Researcher(s) David Gardner
Advisor(s) Roya Maboudian, Carlo Carraro, Ali Javey
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