Sensitivity of diamond-capped impedance transducer to Tröger?s base derivatives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00390076" target="_blank" >RIV/68378271:_____/12:00390076 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/am3005829" target="_blank" >http://dx.doi.org/10.1021/am3005829</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/am3005829" target="_blank" >10.1021/am3005829</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity of diamond-capped impedance transducer to Tröger?s base derivatives

Popis výsledku v původním jazyce

Sensitivity of an intrinsic nanocrystalline diamond (NCD) layer to naphthalene Tröger?s base derivative decorated with pyrrole groups (TBPyr) was characterized by impedance spectroscopy. The transducer was made of Au interdigitated electrodes (IDE) with50 ?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?) 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.

Název v anglickém jazyce

Sensitivity of diamond-capped impedance transducer to Tröger?s base derivatives

Popis výsledku anglicky

Sensitivity of an intrinsic nanocrystalline diamond (NCD) layer to naphthalene Tröger?s base derivative decorated with pyrrole groups (TBPyr) was characterized by impedance spectroscopy. The transducer was made of Au interdigitated electrodes (IDE) with50 ?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?) 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GBP108%2F12%2FG108" target="_blank" >GBP108/12/G108: Příprava, modifikace a charakterizace materiálů zářením</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Applied Materials and Interfaces

ISSN

1944-8244

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

3860-3865

Kód UT WoS článku

000307698600014

EID výsledku v databázi Scopus

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