Stereoselective photoredox ring-opening polymerization of O-carboxyanhydrides
| dc.contributor.author | Feng, Quanyou | en |
| dc.contributor.author | Yang, Lei | en |
| dc.contributor.author | Zhong, Yongliang | en |
| dc.contributor.author | Guo, Dong | en |
| dc.contributor.author | Liu, Guoliang | en |
| dc.contributor.author | Xie, Linghai | en |
| dc.contributor.author | Huang, Wei | en |
| dc.contributor.author | Tong, Rong | en |
| dc.contributor.department | Chemical Engineering | en |
| dc.contributor.department | Chemistry | en |
| dc.date.accessioned | 2018-05-10T12:21:35Z | en |
| dc.date.available | 2018-05-10T12:21:35Z | en |
| dc.date.issued | 2018-04-19 | en |
| dc.description.abstract | Biodegradable polyesters with various tacticities have been synthesized by means of stereoselective ring-opening polymerization of racemic lactide and β-lactones but with limited side-chain groups. However, stereoselective synthesis of functional polyesters remains challenging from O-carboxyanhydrides that have abundant pendant side-chain functional groups. Herein we report a powerful strategy to synthesize stereoblock polyesters by stereoselective ring-opening polymerization of racemic O-carboxyanhydrides with the use of photoredox Ni/Ir catalysts and a selected Zn complex with an achiral ligand. The obtained stereoblock copolymers are highly isotactic with high molecular weights ( > 70 kDa) and narrow molecular weight distributions (Mw/Mn < 1.1), and they display distinct melting temperatures that are similar to their stereocomplex counterparts. Furthermore, in one-pot photoredox copolymerization of two different O-carboxyanhydrides, the use of such Zn complex mediates kinetic resolution of the comonomers during enchainment and shows a chirality preference that allows for the synthesis of gradient copolymers. | en |
| dc.description.sponsorship | This work was supported by start-up funding from Virginia Polytechnic Institute and State University and the American Chemical Society Petroleum Research Fund. We thank Dr. N. Murthy Shanaiah for NMR experiments and Dr. Webster Santos for providing anhydrous solvents. Q.F. and L.X. acknowledge support from the National Natural Science Foundation of China (21504047, 21774061), the Six Peak Talents Foundation of Jiangsu Province (XCL-CXTD-009), the Natural Science Foundation of Jiangsu Province (BK20150834), and the Synergetic Innovation Center for Organic Electronics and Information Displays. | en |
| dc.description.version | Published version | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.1038/s41467-018-03879-5 | en |
| dc.identifier.issue | 1 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/83207 | en |
| dc.identifier.volume | 9 | en |
| dc.language.iso | en | en |
| dc.publisher | Nature | en |
| dc.rights | Creative Commons Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.title | Stereoselective photoredox ring-opening polymerization of O-carboxyanhydrides | en |
| dc.title.serial | Nature Communications | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |