. . . "surface conductivity; impedance spectroscopy; chemical sensor; nanocrystalline diamond; Troger's base derivative"@en . "Sensitivity of Diamond-Capped Impedance Transducer to Troger's Base Derivative"@en . . "Stehl\u00EDk, \u0160t\u011Bp\u00E1n" . "8" . "Havl\u00EDk, Martin" . "000307698600014" . . . "4" . . . . "6"^^ . "RIV/60461373:22340/12:43893418" . "ACS Applied Materials and Interfaces" . . . "167447" . "6"^^ . "Kromka, Alexander" . . "RIV/60461373:22340/12:43893418!RIV13-GA0-22340___" . . . . . "Sensitivity of Diamond-Capped Impedance Transducer to Troger's Base Derivative" . "Sensitivity of an intrinsic nanocrystalline diamond (NCD) layer to naphthalene Troger's base derivative decorated with pyrrole groups (TBPyr) was characterized by impedance spectroscopy. The transducer was made of Au interdigitated electrodes (IDE) with 50 mu m spacing on alumina substrate which were capped with the NCD layer. The NCD-capped transducer with H-termination was able to electrically distinguish TBPyr molecules (the change of surface resistance Within 30-60 k Omega) adsorbed from methanol in concentrations of 0.04 mg/mL to 40 mg/mL. An exponential decay of the surface resistance with time was observed and attributed to the readsorption of air moisture after methanol evaporation. After surface oxidation the NCD cap layer did not show any leakage due to NCD grain boundaries. We analyzed electronic transport in the transducer and propose a model for the sensing mechanism based on surface ion replacement."@en . . . "Rezek, Bohumil" . "2"^^ . "P(GA203/08/1445), P(GBP108/12/G108), Z(AV0Z10100521)" . . "Iz\u00E1k, Tibor" . "Sensitivity of an intrinsic nanocrystalline diamond (NCD) layer to naphthalene Troger's base derivative decorated with pyrrole groups (TBPyr) was characterized by impedance spectroscopy. The transducer was made of Au interdigitated electrodes (IDE) with 50 mu m spacing on alumina substrate which were capped with the NCD layer. The NCD-capped transducer with H-termination was able to electrically distinguish TBPyr molecules (the change of surface resistance Within 30-60 k Omega) adsorbed from methanol in concentrations of 0.04 mg/mL to 40 mg/mL. An exponential decay of the surface resistance with time was observed and attributed to the readsorption of air moisture after methanol evaporation. After surface oxidation the NCD cap layer did not show any leakage due to NCD grain boundaries. We analyzed electronic transport in the transducer and propose a model for the sensing mechanism based on surface ion replacement." . "10.1021/am3005829" . "22340" . "Sensitivity of Diamond-Capped Impedance Transducer to Troger's Base Derivative"@en . "1944-8244" . . . . "[CC259B0044D5]" . "Dolensk\u00FD, Bohumil" . "Sensitivity of Diamond-Capped Impedance Transducer to Troger's Base Derivative" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" .