Ring-Opening Polymerization with Lewis Pairs and Subsequent Nucleophilic Substitution: A Promising Strategy to Well-Defined Polyethylene-like Polyesters without Transesterification

2018 ◽  
Vol 51 (3) ◽  
pp. 836-845 ◽  
Author(s):  
Bin Wang ◽  
Li Pan ◽  
Zhe Ma ◽  
Yuesheng Li
Keyword(s):  
Nucleophilic Substitution ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Promising Strategy ◽  
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

Amphiphilic polymers formed from ring-opening polymerization: a strategy for the enhancement of gene delivery

2017 ◽  
Vol 5 (4) ◽  
pp. 718-729 ◽  
Author(s):  
Yi-Mei Zhang ◽  
Zheng Huang ◽  
Ji Zhang ◽  
Wan-Xia Wu ◽  
Yan-Hong Liu ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Ring Opening ◽  
Transfection Efficiency ◽  
Ring Opening Polymerization ◽  
Amphiphilic Polymers ◽  
Cationic Lipids ◽  
Promising Strategy

Ring-opening polymerization was found to be a promising strategy to improve the transfection efficiency and serum tolerance of cationic lipids.

Cationic polymer-derived carbon dots for enhanced gene delivery and cell imaging

2019 ◽  
Vol 7 (5) ◽  
pp. 1940-1948 ◽  
Author(s):  
Xi He ◽  
Ping Chen ◽  
Ji Zhang ◽  
Tian-Ying Luo ◽  
Hai-Jiao Wang ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Carbon Dots ◽  
Ring Opening ◽  
Cell Imaging ◽  
High Efficiency ◽  
Ring Opening Polymerization ◽  
Cationic Polymer ◽  
Cationic Polymers ◽  
Promising Strategy ◽  
Gene Vectors

The transformation of cationic polymers derived from ring-opening polymerization to carbon dots was proved as a promising strategy for developing gene vectors with high efficiency and cell-imaging ability.

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

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
Sign in / Sign up

Export Citation Format

Share Document