Ring-Opening Polymerization with Zn(C6F5)2-Based Lewis Pairs: Original and Efficient Approach to Cyclic Polyesters

2013 ◽  
Vol 135 (36) ◽  
pp. 13306-13309 ◽  
Author(s):  
Estefanía Piedra-Arroni ◽  
Catherine Ladavière ◽  
Abderrahmane Amgoune ◽  
Didier Bourissou
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Efficient Approach ◽  
Lewis Pairs

Insights into the mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2/organic superbase Lewis pairs

2016 ◽  
Vol 6 (21) ◽  
pp. 7763-7772 ◽  
Author(s):  
Xiao-Qing Li ◽  
Bin Wang ◽  
He-Yuan Ji ◽  
Yue-Sheng Li
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Experimental Results ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Good Consistency ◽  
Plausible Mechanism ◽  
Tof Ms ◽  
Lewis Pairs

A plausible mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2-based Lewis pairs was proposed based on in situ NMR and MALDI-TOF MS analyses. Several experimental results show very good consistency with the proposed mechanism.

Controlled ring-opening polymerization ofl-lactide and ε-caprolactone catalyzed by aluminum-based Lewis pairs or Lewis acid alone

2016 ◽  
Vol 55 (2) ◽  
pp. 297-303 ◽  
Author(s):  
Yuushou Nakayama ◽  
Shunsuke Kosaka ◽  
Kentaro Yamaguchi ◽  
Gentaro Yamazaki ◽  
Ryo Tanaka ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Lewis Pairs

Controlled ring-opening polymerization of α-amino acid N-carboxy-anhydride by frustrated amine/borane Lewis pairs

2017 ◽  
Vol 53 (37) ◽  
pp. 5155-5158 ◽  
Author(s):  
Hongyuan Zhang ◽  
Yanzhao Nie ◽  
Xinmei Zhi ◽  
Haifeng Du ◽  
Jing Yang
Keyword(s):  
Amino Acid ◽  
Lewis Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Amine Groups ◽  
Lewis Pairs

An FLP intermediate formed through the bulky borane Lewis acid and the amine groups of the propagation chain end controlled the ring-opening polymerization of α-amino acid N-carboxy-anhydride monomers.

Simple Lewis pairs of zinc salts and organobases as bifunctional catalysts for controlled ring-opening polymerization of O-carboxyanhydrides

2019 ◽  
Vol 10 (40) ◽  
pp. 5498-5506 ◽  
Author(s):  
Pei Wang ◽  
Jinpeng Liang ◽  
Ting Yin ◽  
Jing Yang
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Bifunctional Catalysis ◽  
Bifunctional Catalysts ◽  
Hydroxyalkanoic Acid ◽  
Zinc Salts ◽  
Lewis Pairs

Simple Lewis pairs consisting of organobases and zinc salts were explored to promote ring-opening polymerization of phenyl O-carboxyanhydride via bifunctional catalysis, producing well-defined poly(α-hydroxyalkanoic acid)s with good isotacticity (Pm = 0.88).

Living Ring-Opening Polymerization of Lactones by N-Heterocyclic Olefin/Al(C6F5)3 Lewis Pairs: Structures of Intermediates, Kinetics, and Mechanism

2016 ◽  
Vol 50 (1) ◽  
pp. 123-136 ◽  
Author(s):  
Qianyi Wang ◽  
Wuchao Zhao ◽  
Jianghua He ◽  
Yuetao Zhang ◽  
Eugene Y.-X. Chen
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Kinetics And Mechanism ◽  
Lewis Pairs

Weak Lewis Pairs as Catalysts for Highly Isoselective Ring-Opening Polymerization of Epimerically Labile rac-O-Carboxyanhydride of Mandelic Acid

2020 ◽  
Vol 53 (3) ◽  
pp. 946-955 ◽  
Author(s):  
Jinxing Jiang ◽  
Yaqin Cui ◽  
Yaguang Lu ◽  
Bin Zhang ◽  
Xiaobo Pan ◽  
...  
Keyword(s):  
Ring Opening ◽  
Mandelic Acid ◽  
Ring Opening Polymerization ◽  
Lewis Pairs

A Recommender System for Inverse Design of Polycarbonates and Polyesters

2020 ◽  
Author(s):  
Nathaniel Park ◽  
Dmitry Yu. Zubarev ◽  
James L. Hedrick ◽  
Vivien Kiyek ◽  
Christiaan Corbet ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Recommendation System ◽  
Polymeric Materials ◽  
Monomer Conversion ◽  
Design Strategy ◽  
Ring Opening Polymerization ◽  
Inverse Design ◽  
False Negatives ◽  
Accelerate Development

The convergence of artificial intelligence and machine learning with material science holds significant promise to rapidly accelerate development timelines of new high-performance polymeric materials. Within this context, we report an inverse design strategy for polycarbonate and polyester discovery based on a recommendation system that proposes polymerization experiments that are likely to produce materials with targeted properties. Following recommendations of the system driven by the historical ring-opening polymerization results, we carried out experiments targeting specific ranges of monomer conversion and dispersity of the polymers obtained from cyclic lactones and carbonates. The results of the experiments were in close agreement with the recommendation targets with few false negatives or positives obtained for each class.<br>

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