Počet záznamů: 1
Homo- and Copolycyclotrimerization of Aromatic Internal Diynes Catalyzed with Co-2(CO)(8): A Facile Route to Microporous Photoluminescent Polyphenylenes with Hyperbranched or Crosslinked Architecture
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SYSNO ASEP 0488694 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Homo- and Copolycyclotrimerization of Aromatic Internal Diynes Catalyzed with Co-2(CO)(8): A Facile Route to Microporous Photoluminescent Polyphenylenes with Hyperbranched or Crosslinked Architecture Tvůrce(i) Sedláček, J. (CZ)
Sokol, J. (CZ)
Zedník, J. (CZ)
Faukner, T. (CZ)
Kubů, Martin (UFCH-W) RID
Brus, Jiří (UMCH-V) RID, ORCID
Trhlíková, Olga (UMCH-V) RID, ORCIDČíslo článku 1700518 Zdroj.dok. Macromolecular Rapid Communications. - : Wiley - ISSN 1022-1336
Roč. 39, č. 4 (2018)Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova microporous polymers ; photoluminescence ; polycyclotrimerization ; polyphenylenes Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Vědní obor RIV – spolupráce Ústav makromolekulární chemie - Fyzikální chemie a teoretická chemie Institucionální podpora UFCH-W - RVO:61388955 ; UMCH-V - RVO:61389013 UT WOS 000425472300002 EID SCOPUS 85035063797 DOI https://doi.org/10.1002/marc.201700518 Anotace This study reports the first Co-2(CO)(8)-catalyzed [2+2+2] polycyclotrimerization by the transformation of internal ethynyl groups of aromatic diyne monomers. The reaction yields polycyclotrimers of polyphenylene-type with either hyperbranched or partly crosslinked architecture. The homopolycyclotrimerization of the monomers with two ethynyl groups per one molecule, namely 1,4-bis(phenylethynyl)benzene, 4,4-bis(phenylethynyl)biphenyl, and 4-(phenylethynyl)phenylacetylene, gives partly crosslinked, insoluble polyphenylenes. The soluble, hyperbranched polyphenylenes are generated via copolycyclotrimerization of 1,4-bis(phenylethynyl)benzene with 1,2-diphenylacetylene (average number of ethynyl groups per monomer molecule < 2). This one-step polycyclotrimerization path to hyperbranched or partly crosslinked polyphenylenes is an alternative to the synthesis of these polymers by Diels-Alder transformation of substituted cyclopentadienones. All polyphenylenes prepared exhibit photoluminescence with emission maxima ranging from 381 to 495 nm. Polyphenylenes with a less compact packing of segments are microporous (specific surface area up to 159 m(2) g(-1)), which is particularly important in the case of soluble polyphenylenes because they can be potentially used to prepare microporous layers. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2019
Počet záznamů: 1