Highly conducting 1-D polypyrrole prepared in the presence of safranin

0532262 - ÚMCH 2021 RIV GB eng J - Článek v odborném periodiku
Minisy, Islam M. - Acharya, Udit - Kobera, Libor - Trchová, Miroslava - Unterweger, C. - Breitenbach, S. - Brus, Jiří - Pfleger, Jiří - Stejskal, Jaroslav - Bober, Patrycja
Highly conducting 1-D polypyrrole prepared in the presence of safranin.
Journal of Materials Chemistry C. Roč. 8, č. 35 (2020), s. 12140-12147. ISSN 2050-7526. E-ISSN 2050-7534
Grant CEP: GA ČR(CZ) GA18-04669S
Institucionální podpora: RVO:61389013
Klíčová slova: conducting polymers * polypyrrole * conductivity
Obor OECD: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impakt faktor: 7.393, rok: 2020
Způsob publikování: Omezený přístup
https://pubs.rsc.org/en/content/articlelanding/2020/TC/D0TC02838J#!divAbstract

A facile preparation of a conducting one-dimensional polypyrrole nanostructure (1-D PPy) was achieved in the presence of safranin dye. The polymerization temperature has a significant effect on the conductivity, specific surface area and morphology of PPy. A decrease in the polymerization temperature leads to a significant increase in the conductivity. The highest conductivity was obtained by frozen polymerization (−24 °C) with a value of 175 ± 4 and 23.7 ± 2.9 S cm−1 for 1-D PPy and globular PPy, respectively. The temperature dependence of the conductivity of 1-D PPy prepared at −24 °C revealed a semiconducting behaviour with a 3-D variable range hopping charge transfer mechanism. Raman spectroscopy results suggested that the high conductivity can be attributed to the high protonation level of 1-D PPy. Nuclear magnetic resonance spectroscopy has been used to study the chemical structure of 1-D PPy and the incorporation of safranin into the polymer matrix.
Trvalý link: http://hdl.handle.net/11104/0311064