Počet záznamů: 1
New hyper-crosslinked partly conjugated networks with tunable composition by spontaneous polymerization of ethynylpyridines with bis(bromomethyl)arenes: Synthesis, spectral properties, and activity in CO2 capture
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SYSNO ASEP 0422049 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název New hyper-crosslinked partly conjugated networks with tunable composition by spontaneous polymerization of ethynylpyridines with bis(bromomethyl)arenes: Synthesis, spectral properties, and activity in CO2 capture Tvůrce(i) Petrášová, S. (CZ)
Zukal, Arnošt (UFCH-W) RID
Brus, Jiří (UMCH-V) RID, ORCID
Balcar, Hynek (UFCH-W) RID, ORCID
Pastva, Jakub (UFCH-W) RID, ORCID
Zednik, J. (CZ)
Sedláček, J. (CZ)Zdroj.dok. Macromolecular Chemistry and Physics. - : Wiley - ISSN 1022-1352
Roč. 214, č. 24 (2013), s. 2856-2866Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova CO2 capture ; Conjugated polymers ; ethynylpyridine Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Vědní obor RIV – spolupráce Ústav makromolekulární chemie - Makromolekulární chemie CEP GAP108/11/1661 GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 ; UMCH-V - RVO:61389013 UT WOS 000329021400010 EID SCOPUS 84890568002 DOI 10.1002/macp.201300540 Anotace Spontaneous catalyst-free polymerizations of 4-ethynylpyridine (4EPy) and 2-ethynylpyridine with bifunctional quaternizing agents (QAs) of bis(bromomethyl)arenes provide highly crosslinked polymer networks in high yields. 13C cross-polarization magic-angle spinning (CP/MAS) NMR, Fourier transform IR (FTIR) and diffuse reflectance vis spectroscopy confirm that these networks consist of polyacetylene main chains substituted with pyridyl and pyridiniumyl groups, the latter interconnected with -CH 2(arylene)CH2- linkers. Variation of the 4EPy/QA ratio in the polymerization feed results in networks with different extents of crosslinking and pyridyl/pyridiniumyl ratio (N/N+ from 0 to 1.32). Networks exhibit photoluminescence and are also moderately active in CO 2 capture (the highest uptake is 16.4 cm3 (STP) g -1 at 293 K and an equilibrium CO2 pressure of 750 Torr). Polymerizations of 4-, and 2-ethynylpyridine with bifunctional quaternizing agents of bis(bromomethyl)arenes provide highly crosslinked networks with polyacetylene main chains substituted by pyridyl and pyridiniumyl groups and crosslinked via -CH2(arylene)CH2- linkers. Depending on the synthesis conditions, the networks differ in crosslinking extent and pyridyl/pyridiniumyl ratio. The networks exhibit photoluminescence and CO 2 capture. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2014
Počet záznamů: 1