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Phosphasalen Indium Complexes Showing High Rates and Isoselectivities in rac-Lactide Polymerizations.

ABSTRACT: Polylactide (PLA) is the leading bioderived polymer produced commercially by the metal-catalyzed ring-opening polymerization of lactide. Control over tacticity to produce stereoblock PLA, from rac-lactide improves thermal properties but is an outstanding challenge. Here, phosphasalen indium catalysts feature high rates (30±3 m^-1 min^-1 , THF, 298 K), high control, low loadings (0.2 mol %), and isoselectivity (P_i =0.92, THF, 258 K). Furthermore, the phosphasalen indium catalysts do not require any chiral additives.

SUBMITTER: Myers D

PROVIDER: S-EPMC5434947 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Phosphasalen Indium Complexes Showing High Rates and Isoselectivities in rac-Lactide Polymerizations.

Myers Dominic D White Andrew J P AJP Forsyth Craig M CM Bown Mark M Williams Charlotte K CK

Angewandte Chemie (International ed. in English) 20170405 19

Polylactide (PLA) is the leading bioderived polymer produced commercially by the metal-catalyzed ring-opening polymerization of lactide. Control over tacticity to produce stereoblock PLA, from rac-lactide improves thermal properties but is an outstanding challenge. Here, phosphasalen indium catalysts feature high rates (30±3 m-1 min-1 , THF, 298 K), high control, low loadings (0.2 mol %), and isoselectivity (Pi =0.92, THF, 258 K). Furthermore, the phosphasalen i ...[more]

PMID: 28378455

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