Nežádoucí změny ve složení membrán H+ iontově-selektivní elektrod a optod

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F05%3A00000695" target="_blank" >RIV/61388955:_____/05:00000695 - 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

Detrimental changes in the composition of hydrogen ion-selective electrode and optode membranes

Popis výsledku v původním jazyce

Derivatives of phenoxazine dyes serve as chromoionophores in the field of chemical sensors. By studying the changes of the distribution of membrane components in ETH 5294 based, pH sensitive, ion-selective membranes using spectroelectrochemical microscopy (SpECM), the decay in the concentration of the protonated chromoionophore was generally much larger than expected upon previous studies. These recorded changes could not be interpreted with the leaching of the protonated or unprotonated forms of ETH 5294 or the tetraphenyl borate derivatives embedded in the membrane. Similarly, the changes could not be explained by the photochemical decomposition of the tetraphenyl borate derivatives (tetraphenyl borate, TPB- or tetrakis(4-chlorophenyl) borate, TpClPB-). The decrease in the absorbance value measured at 660 nm, at the absorbance maximum of the protonated chromoionophore has been linked to the photochemically initiated, singlet oxygen mediated decomposition of ETH 5294.

Název v anglickém jazyce

Detrimental changes in the composition of hydrogen ion-selective electrode and optode membranes

Popis výsledku anglicky

Derivatives of phenoxazine dyes serve as chromoionophores in the field of chemical sensors. By studying the changes of the distribution of membrane components in ETH 5294 based, pH sensitive, ion-selective membranes using spectroelectrochemical microscopy (SpECM), the decay in the concentration of the protonated chromoionophore was generally much larger than expected upon previous studies. These recorded changes could not be interpreted with the leaching of the protonated or unprotonated forms of ETH 5294 or the tetraphenyl borate derivatives embedded in the membrane. Similarly, the changes could not be explained by the photochemical decomposition of the tetraphenyl borate derivatives (tetraphenyl borate, TPB- or tetrakis(4-chlorophenyl) borate, TpClPB-). The decrease in the absorbance value measured at 660 nm, at the absorbance maximum of the protonated chromoionophore has been linked to the photochemically initiated, singlet oxygen mediated decomposition of ETH 5294.

Druh

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

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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

Název periodika

Analytica Chimica Acta

ISSN

0003-2670

e-ISSN

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Svazek periodika

543

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

156-166

Kód UT WoS článku

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EID výsledku v databázi Scopus

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