Počet záznamů: 1
Effect of structural features of polypyrrole (PPy) on electrical conductivity reflected on 13C ssNMR parameters
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SYSNO ASEP 0517540 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of structural features of polypyrrole (PPy) on electrical conductivity reflected on 13C ssNMR parameters Tvůrce(i) 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, ORCIDČíslo článku 116250 Zdroj.dok. Synthetic Metals. - : Elsevier - ISSN 0379-6779
Roč. 259, January (2020), s. 1-6Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova polypyrrole ; 13C ssNMR spectroscopy ; conductivity Vědní obor RIV CB - Analytická chemie, separace Obor OECD Analytical chemistry CEP GA18-12925S GA ČR - Grantová agentura ČR GA19-05259S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000509778400021 EID SCOPUS 85075821603 DOI 10.1016/j.synthmet.2019.116250 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0379677919307842?via%3Dihub
Počet záznamů: 1