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Metal-containing ionic liquids for catalysis of ring opening polymerization

Autoři: Honzíček Jan | Vinklárek Jaromír | Ecorchard Petra | Beneš Hynek

Rok: 2022

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

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Jazyk	Název	Abstrakt	Klíčová slova
eng	Metal-containing ionic liquids for catalysis of ring opening polymerization	The ring opening polymerization (ROP) of cyclic monomers is a versatile procedure capable to give linear polymers (e.g. polyesters, polycarbonates) under mild and solvent-free conditions. Further advantage over more common condensation polymerization involves no byproduct formation. Recently, ionic liquids (ILs) have been introduced as promising catalysts/initiators for ROP of ε-caprolactone [1,2]. Introduction of imidazolium ring into structure of IL improves its performance toward ROP of cyclic esters as the imidazolium ring acts as a hydrogen donor initiating the polymerization process [3]. Metal-containing imidazolium-based ILs are suggested as promising dual-function catalysts since metal complexes often show high activity and selectivity of polymerization reactions [4]. In this study, a series of imidazolium-based ILs containing transition metals was synthesized by a reaction of 1-butyl-3-methylimidazolium (Bu-MIM) chloride with metal chlorides in molar ratios 1:1 (M = Cr, Fe, Ce) and 2:1 (M = Mn, Co, Ni, Cu). Appeared liquids or low melting solids of formula [Bu-MIM][MCl4–] (M = Cr, Fe, Ce) and [Bu-MIM]2[MCl42–] (M = Mn, Co, Ni, Cu) were characterized by infrared spectroscopy, Raman spectroscopy and inductively coupled plasma optical emission spectrometry. Investigation of their catalytic effect on ROP of ε-caprolactone is currently ongoing.	ionic liquid; metal; imidazole

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