Electrochemical behavior of methylene blue at bare and DNA-modified silver solid amalgam electrodes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10454779" target="_blank" >RIV/00216208:11310/22:10454779 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8jwOyDjxkw" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8jwOyDjxkw</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10008-022-05270-3" target="_blank" >10.1007/s10008-022-05270-3</a>

Result language
angličtina
Original language name
Electrochemical behavior of methylene blue at bare and DNA-modified silver solid amalgam electrodes
Original language description
Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used for a voltammetric study of methylene blue (MB) at a mercury meniscus-modified silver solid amalgam electrode (m-AgSAE). Electrochemical impedance spectroscopy (EIS) was used for the verification and comparison of results. DPV offered sensitive detection of MB (in 0.1 mol L(-1) phosphate buffer of pH 7.0) at both a bare and a DNA-modified silver amalgam electrode. MB gives a specific cathodic signal related to the reduction of this redox intercalator. This signal is significantly higher at the DNA-modified than at the unmodified silver amalgam electrode, which is in correspondence with the changes in charge transfer resistance values obtained from Nyquist plots. The concentration of double-stranded DNA (dsDNA) to form a layer (0.1 mg mL(-1)), the time of the dsDNA spontaneous immobilization on the surface of the electrode (1 min), the concentration of MB (1x10(-5) mol L(-1)), and the time of the accumulation of MB into the dsDNA layer (1 min) were optimized for further biosensor development and applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry

Project
<a href="/en/project/GA20-01589S" target="_blank" >GA20-01589S: New strategies for improving sensing properties of novel electrode materials via their surface pretreatment or modification</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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