Number of the records: 1
Effect of structural features of polypyrrole (PPy) on electrical conductivity reflected on 13C ssNMR parameters
- 1.
SYSNO ASEP 0517540 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of structural features of polypyrrole (PPy) on electrical conductivity reflected on 13C ssNMR parameters Author(s) Mahun, Andrii (UMCH-V) ORCID
Abbrent, Sabina (UMCH-V) RID, ORCID
Bober, Patrycja (UMCH-V) RID, ORCID, SAI
Brus, Jiří (UMCH-V) RID, ORCID
Kobera, Libor (UMCH-V) RID, ORCIDArticle number 116250 Source Title Synthetic Metals. - : Elsevier - ISSN 0379-6779
Roč. 259, January (2020), s. 1-6Number of pages 6 s. Language eng - English Country CH - Switzerland Keywords polypyrrole ; 13C ssNMR spectroscopy ; conductivity Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry R&D Projects GA18-12925S GA ČR - Czech Science Foundation (CSF) GA19-05259S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000509778400021 EID SCOPUS 85075821603 DOI 10.1016/j.synthmet.2019.116250 Annotation Polypyrroles are widely used in the chemical industry because of their variable conductivity and stability. Their precise structural description and understanding of their electronic structure are crucial steps for targeted synthesis and specific use. Herein, we present an experimental strategy using solid-state 13C NMR spectroscopy allowing detailed structural characterization of a wide range of polypyrrole systems with considerably differing conductivity ranging from 5.3 × 10−7 S cm–1 to 103 S cm–1. In this regard, we have optimized an experimental strategy combining traditional as well as advanced NMR techniques allowing reliable detection of spectra for all samples in this heterogeneous group of systems. From all recorded 13C NMR spectra the relative content of quinoid form present in each sample is determined and correlated with observed conductivity. Furthermore, the correlation among content of quinoid form, sample conductivity and half-width of corresponding 13C NMR signal was revealed. We show that by obtaining one of the three experimentally obtained parameters, the other two can be quickly and easily estimated. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0379677919307842?via%3Dihub
Number of the records: 1