For the present work single-walled carbon nanotube (SWNT) field-effect transistors and field-effect transistors based on poly(3-hexylthiophene) were fabricated and used as protein sensors in aqueous environment. The stability of both transistor types in biological buffers was tested. Additionally the interactions of various proteins with ligands, were analyzed using SWNT transistors. Using biofunctionalized SWNT transistors the dissociation constants of a protein was probed and it was possible to distinguish between two different other proteins by their pH-dependent sensor response.
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For the present work single-walled carbon nanotube (SWNT) field-effect transistors and field-effect transistors based on poly(3-hexylthiophene) were fabricated and used as protein sensors in aqueous environment. The stability of both transistor types in biological buffers was tested. Additionally the interactions of various proteins with ligands, were analyzed using SWNT transistors. Using biofunctionalized SWNT transistors the dissociation constants of a protein was probed and it was possible t...
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