Indium-Catalyzed Block Copolymerization of Lactide and Methyl Methacrylate by Sequential Addition

Indium-Catalyzed Block Copolymerization of Lactide and Methyl Methacrylate by Sequential Addition

We report a metal-mediated sequential addition synthetic route for copolymerization of lactide (or ε-caprolactone) and methyl methacrylate. We synthesized a series of neutral and cationic indium complexes supported by tridentate Schiff base ligands and investigated their reactivities for the homo- a...

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Veröffentlicht in:ACS catalysis 2020-06, Vol.10 (11), p.6488-6496
Hauptverfasser: Jung, Hyuk-Joon, Yu, Insun, Nyamayaro, Kudzanai, Mehrkhodavandi, Parisa
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container_issue 11
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container_title ACS catalysis
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creator Jung, Hyuk-Joon
Yu, Insun
Nyamayaro, Kudzanai
Mehrkhodavandi, Parisa
description We report a metal-mediated sequential addition synthetic route for copolymerization of lactide (or ε-caprolactone) and methyl methacrylate. We synthesized a series of neutral and cationic indium complexes supported by tridentate Schiff base ligands and investigated their reactivities for the homo- and copolymerization of lactide or ε-caprolactone and methyl methacrylate. We showed that the neutral indium complex (±)-(NNiOtBu)­In­(CH2SiMe3)2 (2) catalyzes the sequential block copolymerization of lactide/ε-caprolactone and methyl methacrylate without any additional reagents or synthetic steps. The block copolymers were stringently characterized by size exclusion chromatography (SEC), diffusion ordered NMR spectroscopy (DOSY), differential scanning calorimetry (DSC), and fractional precipitation techniques.
doi_str_mv 10.1021/acscatal.0c01365
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title Indium-Catalyzed Block Copolymerization of Lactide and Methyl Methacrylate by Sequential Addition
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