Chemosensitivní vlastnosti poly-4,4'-dialkoxy-2,2'-bipyrrolů

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F06%3A00016631" target="_blank" >RIV/60461373:22340/06:00016631 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Chemosensitive properties of poly-4,4'-dialkoxy2,2'-bipyrroles

Popis výsledku v původním jazyce

Chemosensitive properties of 4,4´-methoxy-2,2´-bipyrrole and 4,4´-buthoxy-2,2´-bipyrrole were investigated. These new conductive polymers were polymerized by cyclic voltammetry on the platinum and gold interdigitated electrodes designed for two and fourpoint measurement of lateral conductivity. Thus obtained polymers demonstrated high sensitivity to HCl in the ppm concentration range. Kinetics of the gaseous HCl influence on the ratios of conductivities measured by 2- and 4-point techniques was analyzed. Some response of the polymers conductance toward NH3, NO and oxygen was also observed but with much lower sensitivity than towards HCl. In aqueous solutions the polymer conductivity was pH-dependent; in comparison with 4,4´-dibuthoxy-2,2´-bipyrrole, the conductivity range of the methoxy- derivative was shifted to acidic range for about two pH-units. A possibility to use of the pH-dependence for the development of enzymatic biosensors with pH-transducing was demonstrated.

Název v anglickém jazyce

Chemosensitive properties of poly-4,4'-dialkoxy2,2'-bipyrroles

Popis výsledku anglicky

Chemosensitive properties of 4,4´-methoxy-2,2´-bipyrrole and 4,4´-buthoxy-2,2´-bipyrrole were investigated. These new conductive polymers were polymerized by cyclic voltammetry on the platinum and gold interdigitated electrodes designed for two and fourpoint measurement of lateral conductivity. Thus obtained polymers demonstrated high sensitivity to HCl in the ppm concentration range. Kinetics of the gaseous HCl influence on the ratios of conductivities measured by 2- and 4-point techniques was analyzed. Some response of the polymers conductance toward NH3, NO and oxygen was also observed but with much lower sensitivity than towards HCl. In aqueous solutions the polymer conductivity was pH-dependent; in comparison with 4,4´-dibuthoxy-2,2´-bipyrrole, the conductivity range of the methoxy- derivative was shifted to acidic range for about two pH-units. A possibility to use of the pH-dependence for the development of enzymatic biosensors with pH-transducing was demonstrated.

Druh

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

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Chemistry

ISSN

0022-4596

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

10

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

185-191

Kód UT WoS článku

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EID výsledku v databázi Scopus

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