Phase transitions of polyaniline induced by electrochemical treatment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F18%3A00488799" target="_blank" >RIV/61389013:_____/18:00488799 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/macp.201700627" target="_blank" >http://dx.doi.org/10.1002/macp.201700627</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/macp.201700627" target="_blank" >10.1002/macp.201700627</a>

Result language
angličtina
Original language name
Phase transitions of polyaniline induced by electrochemical treatment
Original language description
It is known that semiconducting polymers undergo structural changes only during overoxidation, which is simultaneously connected with the degradation of these polymers. However, if their electrochemical performance is studied within a potential window in which the polymer is stable, no morphological and/or structural changes are observed. It is demonstrated for the first time that polyaniline is able to undergo phase transitions (morphological/structural changes) between the potential cut‐off limits of 0 and 0.7 V, within which no degradation is observed. Scanning electron microscopy measurement provides evidence that the polymer surface changes from porous to smooth film, and differential scanning calorimetry and X‐ray diffraction data are used to investigate and confirm structural changes during the electrochemical treatment. Electrochemical performance is studied for polyaniline before and after phase transitions and is higher for polymer, in which morphological/structural changes occur. These results demonstrate that morphological/structural changes predetermine physical–chemical performance. In particular, the rearrangement of the polyaniline chains during electrochemical treatment has a crucial impact on the ability of the polymer to store energy.
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
10403 - Physical chemistry

Project
<a href="/en/project/GA15-14791S" target="_blank" >GA15-14791S: J-like supramolecular assemblies of semiconducting polymer: the electricity generation and storage enhanced by water and light</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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