Role of p-benzoquinone in the synthesis of a conducting polymer, polyaniline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F19%3A00504103" target="_blank" >RIV/61389013:_____/19:00504103 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/19:10403930
Result on the web
<a href="https://pubs.acs.org/doi/pdf/10.1021/acsomega.9b00542" target="_blank" >https://pubs.acs.org/doi/pdf/10.1021/acsomega.9b00542</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsomega.9b00542" target="_blank" >10.1021/acsomega.9b00542</a>
Alternative languages
Result language
angličtina
Original language name
Role of p-benzoquinone in the synthesis of a conducting polymer, polyaniline
Original language description
Polyaniline (PANI) and 2,5-dianilino-p-benzoquinone both are formed by oxidation of aniline in an acidic aqueous environment. The aim of this study is to understand the impact of addition of p-benzoquinone on the structure of PANI prepared by the oxidation of aniline hydrochloride with ammonium peroxydisulfate and to elucidate the formation of low-molecular-weight byproducts. An increasing yield and size-exclusion chromatography, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy, and nuclear magnetic resonance analyses of the products show that p-benzoquinone does not act as a terminating agent in the synthesis of PANI and the content of 2,5-dianilino-p-benzoquinone increases with the increasing molar concentration of p-benzoquinone in the reaction mixture, [BzQ]. Regarding the structure of PANI, Raman and UV–visible spectra show that the doping level and the charge delocalization both decrease with the increase of [BzQ], and the FTIR spectra of the PANI bases indicate an increased concentration of benzenoid units at higher [BzQ]. We explain these observations by an increasing concentration of structural defects in PANI chains and propose a 2,5-dianilino-p-benzoquinone-like structure of these defects present as pendant groups. The bands typical of 2,5-dianilino-p-benzoquinone-like moiety are observed even in the vibrational spectra of the sample prepared without addition of p-benzoquinone. This confirms in situ oxidation of aniline to p-benzoquinone within the course of the oxidation of aniline hydrochloride to PANI.
Czech name
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Czech description
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Classification
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
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA18-12925S" target="_blank" >GA18-12925S: Advanced environmentally friendly oxazoline-based polyelectrolytes for lithium-ion polymer batteries</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Omega
ISSN
2470-1343
e-ISSN
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Volume of the periodical
4
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
7128-7139
UT code for WoS article
000466552500116
EID of the result in the Scopus database
2-s2.0-85064803105