Visible light-regulated organocatalytic ring-opening polymerization of lactones by harnessing excited state acidity

2021 ◽  
Author(s):  
Saihu Liao ◽  
Xun Zhang ◽  
Qiang Ma ◽  
Yu Jiang ◽  
Siping Hu ◽  
...  
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Aromatic Alcohol

A visible light-regulated organocatalytic ring-opening polymerization of lactones has been developed by harnessing the excited state acidity of aromatic alcohol photocatalysts. Commercially available 1-hydroxypyrene (PyOH) is identified as an efficient...

Visible light-mediated ring-opening polymerization of lactones based on the excited state acidity of ESPT molecules

2020 ◽  
Vol 11 (22) ◽  
pp. 3709-3715
Author(s):  
Xun Zhang ◽  
Siping Hu ◽  
Qiang Ma ◽  
Saihu Liao
Keyword(s):  
Excited State ◽  
Visible Light ◽  
Ring Opening ◽  
Ring Opening Polymerization

A visible light-regulated ring-opening polymerization of lactones has been developed based on the excited state acidity of ESPT molecules.

Photoacid-mediated ring opening polymerization driven by visible light

2016 ◽  
Vol 52 (44) ◽  
pp. 7126-7129 ◽  
Author(s):  
Changkui Fu ◽  
Jiangtao Xu ◽  
Cyrille Boyer
Keyword(s):  
Visible Light ◽  
Ring Opening ◽  
Ring Opening Polymerization

Visible light regulated ring opening polymerization in the presence of reversible merocyanine-based photoacid is reported in this article.

Visible Light-Promoted Catalytic Ring-Opening Isomerization of 1,2-Disubstituted Cyclopropanols to Linear Ketones

2019 ◽  
Author(s):  
Marharyta V. Laktsevich-Iskryk ◽  
Nastassia A. Varabyeva ◽  
Volha V. Kazlova ◽  
Vladimir N. Zhabinskii ◽  
Vladimir A. Khripach ◽  
...  
Keyword(s):  
Visible Light ◽  
Functional Groups ◽  
Ring Opening ◽  
Radical Intermediates ◽  
Reaction Proceeds

In this article, we report a photocatalytic protocol for the isomerization of 1,2-disubstituted cyclopropanols to linear ketones. The reaction proceeds <i>via</i> radical intermediates and tolerates various functional groups.

Visible Light-Promoted Catalytic Ring-Opening Isomerization of 1,2-Disubstituted Cyclopropanols to Linear Ketones

2019 ◽  
Author(s):  
Marharyta V. Laktsevich-Iskryk ◽  
Nastassia A. Varabyeva ◽  
Volha V. Kazlova ◽  
Vladimir N. Zhabinskii ◽  
Vladimir A. Khripach ◽  
...  
Keyword(s):  
Visible Light ◽  
Functional Groups ◽  
Ring Opening ◽  
Radical Intermediates ◽  
Reaction Proceeds

In this article, we report a photocatalytic protocol for the isomerization of 1,2-disubstituted cyclopropanols to linear ketones. The reaction proceeds <i>via</i> radical intermediates and tolerates various functional groups.

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>

Bisurea and Bisthiourea H-Bonding Organocatalysts for Ring-Opening Polymerization: Cues for the Catalyst Design

2019 ◽  
Vol 52 (23) ◽  
pp. 9232-9237 ◽  
Author(s):  
Rukshika S. Hewawasam ◽  
U. L. D. Inush Kalana ◽  
Nayanthara U. Dharmaratne ◽  
Thomas J. Wright ◽  
Timothy J. Bannin ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Catalyst Design
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