Kanai, Yuki ; Foro, Sabine ; Plenio, Herbert (2019)
Bispentiptycenyl–Diimine–Nickel Complexes for Ethene Polymerization and Copolymerization with Polar Monomers.
In: Organometallics, 38 (2)
doi: 10.1021/acs.organomet.8b00836
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ni2+ coordinated within a bowl-shaped diimine ligand with two pentiptycenyl-substituents [(diimine)NiBr2] displays excellent activity for the polymerization of ethene (7 atm) with activities of up to 34 x 10(3) kg(mol Ni)(-1) h(-1) following activation with Et2AlCl. The resulting polymer is characterized by high molecular weights (M-n = 150 x 10(3) g.mol(-1)), low branching (12/1000 C), and a high melting point (Tm = 133 degrees C). The polymerization of ethene with polar comonomers leads to the formation of the respective polar polymers with very efficient incorporation of comonomer. The activity of the catalyst critically depends on the molar ratio of Et2AlCl activator and the polar functional group.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Kanai, Yuki ; Foro, Sabine ; Plenio, Herbert |
| Art des Eintrags: | Bibliographie |
| Titel: | Bispentiptycenyl–Diimine–Nickel Complexes for Ethene Polymerization and Copolymerization with Polar Monomers |
| Sprache: | Englisch |
| Publikationsjahr: | 11 Januar 2019 |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Organometallics |
| Jahrgang/Volume einer Zeitschrift: | 38 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1021/acs.organomet.8b00836 |
| URL / URN: | https://pubs.acs.org/doi/10.1021/acs.organomet.8b00836 |
| Kurzbeschreibung (Abstract): | Ni2+ coordinated within a bowl-shaped diimine ligand with two pentiptycenyl-substituents [(diimine)NiBr2] displays excellent activity for the polymerization of ethene (7 atm) with activities of up to 34 x 10(3) kg(mol Ni)(-1) h(-1) following activation with Et2AlCl. The resulting polymer is characterized by high molecular weights (M-n = 150 x 10(3) g.mol(-1)), low branching (12/1000 C), and a high melting point (Tm = 133 degrees C). The polymerization of ethene with polar comonomers leads to the formation of the respective polar polymers with very efficient incorporation of comonomer. The activity of the catalyst critically depends on the molar ratio of Et2AlCl activator and the polar functional group. |
| Freie Schlagworte: | This work was supported by the TU Darmstadt and the DFG PI 178/13-2. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung 07 Fachbereich Chemie 07 Fachbereich Chemie > Clemens-Schöpf-Institut > Fachgebiet Organische Chemie |
| Hinterlegungsdatum: | 11 Sep 2020 06:55 |
| Letzte Änderung: | 11 Sep 2020 06:55 |
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