Chemistry and Physics of Analyte Identification in Integrated Nanosensors
Final rept. 1 Aug-30 Nov 2008
CALIFORNIA UNIV SAN DIEGO LA JOLLA OFFICE OF CONTRACT AND GRANT ADMINISTRATION
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This supplement was dedicated to the development and modeling of phthalocyanine based chemical sensors. We used Organic Molecular Beam Epitaxy OMBE to prepare phthalocyanine based sensors. We lithographically patterned special electrode configurations and mounted them on a universal commercial carrier chip thus facilitating manufacturability in actual field testable devices closer to reality. Two types of metallo-phthalocyanine M-Pc based sensors were prepared Co-MPc films 12 monolayer thick and 3 different kinds of 12 monolayer M-Pcs on the same chip Co-MPc, Cu-MPc and H2-Pc. These were then tested against a large number of analytes using the UCSD quantitative dosing system. Linear Discriminant analysis of the relative responses of the different MPc films allowed identification of analytes independent of concentration. The devices were also modeled using density functional theoretical methods to determine the binding strength of 12 electron donating analytes to the metal center in the MPc. This allows for a rational sensors design. We are actively seeking the commercial development of these sensors for military and civilian uses.
- Chemical, Biological and Radiological Warfare