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Ionic .pi.-conjugated polyelectrolytes by catalyst free polymerization of bis(pyridyl)acetylenes and bis[(pyridyl)ethynyl]benzenes
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SYSNO ASEP 0446009 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Ionic .pi.-conjugated polyelectrolytes by catalyst free polymerization of bis(pyridyl)acetylenes and bis[(pyridyl)ethynyl]benzenes Tvůrce(i) Faukner, T. (CZ)
Trhlíková, Olga (UMCH-V) RID, ORCID
Zedník, J. (CZ)
Sedláček, J. (CZ)Zdroj.dok. Macromolecular Chemistry and Physics. - : Wiley - ISSN 1022-1352
Roč. 216, č. 14 (2015), s. 1540-1554Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova conjugated polymers ; ionic polymers ; polyacetylenes Vědní obor RIV CD - Makromolekulární chemie CEP GAP108/12/1143 GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000358120700006 EID SCOPUS 84937162846 DOI 10.1002/macp.201500147 Anotace The spontaneous, catalyst free polymerization of four monomers of the bis(pyridyl)acetylene and bis[(pyridyl)ethynyl]benzene types containing either 2-pyridyl or 4-pyridyl groups via activation with benzyl bromide leads to ionic π-conjugated polyacetylene-type polyelectrolytes (CPEs). All polymers are characterized by means of NMR, IR, UV/vis and photoluminescence spectroscopies, thermogravimetric analysis (TGA) and matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS). The position of the pyridyl groups in the monomer influences the degree of quaternization and the extent of conjugation of CPEs. Monomers with 4-pyridyl groups provide CPEs with a low extent of quaternization [N+/(N+ + N) = 0.27–0.34] and high extent of conjugation. On the other hand, the CPEs derived from 2-pyridyl-containing monomers are highly quaternized [N+/(N+ + N) = 0.77–1.00], however, possess lower conjugation of the main chains. The mechanism assuming quaternization and polymerization as competitive reactions is proposed to explain the difference in the extent of quaternization of CPEs. Prepared CPEs i) are well soluble in polar solvents, e.g., water, methanol, dimethyl sulfoxide, and dimethylformamide, ii) exhibit photoluminescence (emission in the violet to yellow region), and iii) possess high thermal stability. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2016
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