Oxidation of pyrrole with: P-benzoquinone to semiconducting products and their application in electrorheology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F18%3A63518932" target="_blank" >RIV/70883521:28610/18:63518932 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/18:00490213

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c8nj01283k" target="_blank" >http://dx.doi.org/10.1039/c8nj01283k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8nj01283k" target="_blank" >10.1039/c8nj01283k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Oxidation of pyrrole with: P-benzoquinone to semiconducting products and their application in electrorheology

Popis výsledku v původním jazyce

A low-molecular-weight organic semiconducting material was prepared by the redox interaction between pyrrole and p-benzoquinone. The reaction between pyrrole and p-benzoquinone in aqueous solutions of methanesulfonic acid proceeded smoothly at room temperature. The product with a globular morphology obtained in high yield in 0.1 M methanesulfonic acid had the highest conductivity, 4.6 × 10-6 S cm-1. On the other hand, the samples prepared in the absence of acid or at high acid concentration were non-conducting. EPR spectroscopy confirmed the presence of electronic species as charge carriers responsible for conductivity. The dominating component was proved to be a low-molecular-weight adduct composed of the quinhydrone complex and the pyrrole molecule. FTIR and Raman spectra were used to discuss the molecular structure in detail. A strong electrorheological effect with a very fast response time was demonstrated by the reproducible increase in the viscosity of suspensions in silicone oil after application of the electric field. The effect is discussed with the help of dielectric spectroscopy.

Název v anglickém jazyce

Oxidation of pyrrole with: P-benzoquinone to semiconducting products and their application in electrorheology

Popis výsledku anglicky

A low-molecular-weight organic semiconducting material was prepared by the redox interaction between pyrrole and p-benzoquinone. The reaction between pyrrole and p-benzoquinone in aqueous solutions of methanesulfonic acid proceeded smoothly at room temperature. The product with a globular morphology obtained in high yield in 0.1 M methanesulfonic acid had the highest conductivity, 4.6 × 10-6 S cm-1. On the other hand, the samples prepared in the absence of acid or at high acid concentration were non-conducting. EPR spectroscopy confirmed the presence of electronic species as charge carriers responsible for conductivity. The dominating component was proved to be a low-molecular-weight adduct composed of the quinhydrone complex and the pyrrole molecule. FTIR and Raman spectra were used to discuss the molecular structure in detail. A strong electrorheological effect with a very fast response time was demonstrated by the reproducible increase in the viscosity of suspensions in silicone oil after application of the electric field. The effect is discussed with the help of dielectric spectroscopy.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

NEW JOURNAL OF CHEMISTRY

ISSN

1144-0546

e-ISSN

—

Svazek periodika

42

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

10167-10176

Kód UT WoS článku

000435298100092

EID výsledku v databázi Scopus

2-s2.0-85048368524