Stereospecific Synthesis of Poly(methylene-E-vinylene) by Ring Opening Metathesis Polymerization of Substituted Cyclopropene Using Grubbs Catalysts

2019 ◽  
Vol 52 (20) ◽  
pp. 7749-7755 ◽  
Author(s):  
Jian-Jhih Peng ◽  
Biswajit Panda ◽  
Kamani Satyanarayana ◽  
Hau-Ren Yang ◽  
Shou-Ling Huang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Stereospecific Synthesis ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Grubbs Catalysts

scholarly journals Dewar Heterocycles as Versatile Monomers for Ring-Opening Metathesis Polymerization

2020 ◽  
Author(s):  
Sepand Nistanaki ◽  
Hosea Nelson
Keyword(s):  
Ring Opening ◽  
Water Soluble ◽  
Ring Opening Metathesis Polymerization ◽  
Valence Isomerization ◽  
Metathesis Polymerization ◽  
Grubbs Catalysts ◽  
Amino Acid Polymers ◽  
Highly Strained ◽  
Acetylene Derivatives ◽  
Soluble Poly

We report the utility of readily available heterocycles as precursors to unique ring-opening metathesis polymerization (ROMP) monomers. Photochemical valence isomerization reactions of pyridones, dihydropyridines, and pyrones dearomatize the parent heterocycles to their highly strained Dewar isomers, which readily engage in controlled ROMP reactions using Grubbs catalysts. This strategy is used to access novel polymer backbones that contain strained β-lactam and azetidine cores, which can be further derivatized using post-polymerization chemistries. We demonstrate this through the synthesis of water-soluble β-amino acid polymers and soluble poly(acetylene) derivatives.

scholarly journals Surface-Initiated Ring-Opening Metathesis Polymerization (SI-ROMP): History, General Features, and Applications in Surface Engineering with Polymer Brushes

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Qingchuan Chen
Keyword(s):  
Polymer Films ◽  
Polymer Brushes ◽  
Ring Opening ◽  
Surface Engineering ◽  
High Efficiency ◽  
Microfluidic Channels ◽  
Ring Opening Metathesis Polymerization ◽  
Graphene Oxides ◽  
Metathesis Polymerization ◽  
Grubbs Catalysts

Surface-Initiated Ring-Opening Metathesis Polymerization (SI-ROMP) has attracted great attention in the past two decades because of its high efficiency in decorating material surfaces with functional polymer brushes. To fill the vacancy of review articles in SI-ROMP, this article is aimed at giving an overview of the history, the general features and procedures, and applications of SI-ROMP, guiding future researchers in this field. In general, SI-ROMP consists of three main steps: surface functionalization with olefin anchors, attachment of catalyst to the surface, and polymerization from the surface. Several metal-based catalysts for ROMP in solution have been developed, but most SI-ROMP reactions use the ruthenium-based Grubbs catalysts. SI-ROMP enables the rapid growth of polymer films on a large variety of substrates such as silica, gold, graphene oxides, carbon nanotubes, metal oxide nanowires, and composite polymer membranes. There are many methods to characterize these polymer brushes. In addition, some novel techniques have been developed to precisely control the surface polymer growth and lead to polymer films with unique structures and functions. Up to this day, SI-ROMP can be applied to the surface engineering of many novel materials, including ultrahydrophobic surfaces, microfluidic channels, electric devices, ion exchange media, and responsive surfaces.

scholarly journals Dewar Heterocycles as Versatile Monomers for Ring-Opening Metathesis Polymerization

2020 ◽  
Author(s):  
Sepand Nistanaki ◽  
Hosea Nelson
Keyword(s):  
Ring Opening ◽  
Water Soluble ◽  
Ring Opening Metathesis Polymerization ◽  
Valence Isomerization ◽  
Metathesis Polymerization ◽  
Grubbs Catalysts ◽  
Amino Acid Polymers ◽  
Highly Strained ◽  
Acetylene Derivatives ◽  
Soluble Poly

We report the utility of readily available heterocycles as precursors to unique ring-opening metathesis polymerization (ROMP) monomers. Photochemical valence isomerization reactions of pyridones, dihydropyridines, and pyrones dearomatize the parent heterocycles to their highly strained Dewar isomers, which readily engage in controlled ROMP reactions using Grubbs catalysts. This strategy is used to access novel polymer backbones that contain strained β-lactam and azetidine cores, which can be further derivatized using post-polymerization chemistries. We demonstrate this through the synthesis of water-soluble β-amino acid polymers and soluble poly(acetylene) derivatives.

Synthesis and Purification of Tunable High Tg Electro-Optical Polymers by Ring Opening Metathesis Polymerization

2011 ◽  
Author(s):  
Robert H. Lambeth ◽  
Joseph M. Dougherty ◽  
Joshua A. Orlicki ◽  
Adam M. Rawlett ◽  
Robert C. Hoffman ◽  
...  
Keyword(s):  
Ring Opening ◽  
Optical Polymers ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization

Surface modification of carbon fibres using ring-opening metathesis polymerization

2021 ◽  
Vol 145 ◽  
pp. 106374
Author(s):  
David J. Hayne ◽  
Filip Stojcevski ◽  
Daniel B. Knorr ◽  
Ngon T. Tran ◽  
Luke C. Henderson
Keyword(s):  
Surface Modification ◽  
Ring Opening ◽  
Carbon Fibres ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization
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