Cationic indium complexes were used as catalysts for the copolymerization of epoxides and racemic lactide (rac-LA) via sequential addition to form high molecular weight block copolymers. Mechanistic studies and control experiments indicate that the epoxide is polymerized by a cationic mechanism to yield a neutral alkoxide indium species that subsequently polymerizes the lactide by a coordination-insertion mechanism with no significant interference of the two mechanisms under polymerization conditions. The thermal and tensile properties of different block copolymers were studied, revealing mostly amorphous materials. We were able to control the ductility and stiffness of the copolymers by tuning the nature and chain length of the blocks.
Publications
(59) Phys. Fluids 2021, 33, 043102
(58) Phys. Fluids 2021, 33, 032010
(57) Polym. Chem. 2021, 12, 783 - 806
(56) Catal. Sci. Technol. 2021, 11, 2119–2129
(55) Catal. Sci. Technol. 2021, 11, 62-91
(54) ACS Appl. Mater. Interfaces 2020, 12, 52182−52191
(53) Macromolecules 2020, 53(20), 8819-8828
(52) ACS Catal. 2020, 10, 6488−6496
(51) Chem. Sci. 2020, 11, 6485−6491
(50) Inorg. Chem. 2020, 59, 5546−5557
(49) Chem. Commun. 2019, 55, 3347-3350
(48) Coord. Chem. Rev. 2019 380, 35–57
(47) ChemCatChem 2018, 10, 3219 – 3222
(46) ACS Sustainable Chem. Eng., 2018, 6, 1650–1661
(45) Acc. Chem. Res. 2017, 50, 2861−2869
(44) J. Rheol. 2017 61(6), 1137-1148
(43) ACS Catal. 2017, 7, 6413−6418
(42) Dalton Trans. 2017 46, 6723–6733
(41) Macromolecules 2017 50 (6), 2535–2546
(40) Inorg. Chem. 2017 56 (3), 1375–1385
(39) Macromolecules 2016 49 (23), 8812–8824
(38) Inorg. Chem. 2016, 55(18), 9445–9453
(37) Inorg. Chem. 2016, 55(11), 5365–5374
(36) Macromolecules 2016, 49(3), 909–919
(35) Macromolecules 2015, 48(18), 6672-6681
(34) Chem. Sci., 2015, 6, 5284–5292
(33) Dalton Trans. 2015, 44, 14248 - 14254
(32) Dalton Trans. 2015, 44, 6126 - 6139
(31) Inorg. Chem. 2014, 53(18), 9897−9906
(30) J. Am. Chem. Soc. 2014, 136(32), 11264–11267
(29) Inorg. Chem. 2014, 53(13), 6828–6836
(28) Organometallics 2013, 32(23), 6950–6956
(27) Macromolecules 2013, 46, 3965−3974
(26) Chem. Commun. 2013, 49, 4295-4297
(25) J. Am. Chem. Soc. 2012, 134(30), 12758–12773
(24) Chem. Commun. 2012, 48(54), 6806-6808
(23) Polymer 2012, 53(12), 2443-2452
(22) Dalton Trans. 2012, 41(26), 8123-8134.
(21) Rheol. Acta 2012, 51(4), 357-369
(20) J. Am. Chem. Soc. 2011, 133(24), 9278–9281
(19) J. Rheol. 2011, 55(5), 987-1004
(18) Organometallics 2010, 29(22), 6065–6076
(17) Inorg. Chem. 2010, 49(12), 5444–5452
(16) Dalton Trans. 2010, 39(2), 541–547
(15) J. Supercrit. Fluids 2010, 51(3), 376-383
(14) Organometallics 2009, 28(21), 6370–6373
(13) Organometallics 2009, 28(13), 3889–3895
(12) Organometallics, 2009, 28(5), 1309-1319
(11) Angew. Chem. Int. Ed. 2008, 47(12), 2290-2293