Potentiometric and Voltammetric Study of 6-Benzylaminopurine and Its Derivatives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F12%3A00059370" target="_blank" >RIV/00216224:14310/12:00059370 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/elan.201100491" target="_blank" >http://dx.doi.org/10.1002/elan.201100491</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/elan.201100491" target="_blank" >10.1002/elan.201100491</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Potentiometric and Voltammetric Study of 6-Benzylaminopurine and Its Derivatives

Popis výsledku v původním jazyce

The protonation-deprotonation equilibrium of 6?benzylaminopurine (6?BAP) and its derivatives was studied by potentiometry and voltammetry. The effect of Cl or OCH3 group position in 2', 3' and 4' of the benzene ring of 6?BAP on both pKa values was investigated. To determine the enthalpy and entropy, the temperature dependence of pKa was employed. It was found that with increasing temperature the pKa decreased. In comparison with 6?BAP the chloro- or methoxy- group on the benzene ring resulted in pKa increase, and in the case of both derivatives the pKa values decreased with increasing distance of the chloro- or methoxy- moiety from the aminopurine structure. The first pKa values were also determined by linear sweep voltammetry (LSV) and elimination voltammetry with linear scan (EVLS). New approaches were shown not only for the determination of pKa from voltammetric titration curves but also for the evaluation of the reduction processes of benzylaminopurines.

Název v anglickém jazyce

Potentiometric and Voltammetric Study of 6-Benzylaminopurine and Its Derivatives

Popis výsledku anglicky

The protonation-deprotonation equilibrium of 6?benzylaminopurine (6?BAP) and its derivatives was studied by potentiometry and voltammetry. The effect of Cl or OCH3 group position in 2', 3' and 4' of the benzene ring of 6?BAP on both pKa values was investigated. To determine the enthalpy and entropy, the temperature dependence of pKa was employed. It was found that with increasing temperature the pKa decreased. In comparison with 6?BAP the chloro- or methoxy- group on the benzene ring resulted in pKa increase, and in the case of both derivatives the pKa values decreased with increasing distance of the chloro- or methoxy- moiety from the aminopurine structure. The first pKa values were also determined by linear sweep voltammetry (LSV) and elimination voltammetry with linear scan (EVLS). New approaches were shown not only for the determination of pKa from voltammetric titration curves but also for the evaluation of the reduction processes of benzylaminopurines.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/LC06035" target="_blank" >LC06035: Centrum biofyzikální chemie, bioelektrochemie a bioanalýzy. Nové nástroje pro genomiku, proteomiku a biomedicínu.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

Electroanalysis

ISSN

1040-0397

e-ISSN

—

Svazek periodika

24

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

349-356

Kód UT WoS článku

000299738900021

EID výsledku v databázi Scopus

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