Amphiphilic norbornene-based diblock copolymers containing polyhedral oligomeric silsesquioxane prepared by living ring opening metathesis polymerization

2008 ◽  
Vol 16 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Su-Dong Park ◽  
Wentao Xu ◽  
Chanhong Chung ◽  
Younghwan Kwon
Keyword(s):  
Ring Opening ◽  
Diblock Copolymers ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Oligomeric Silsesquioxane

Polyethylene telechelics with POSS termini: synthesis, morphologies and shape memory properties

2020 ◽  
Vol 11 (36) ◽  
pp. 5819-5832
Author(s):  
Bingjie Zhao ◽  
Honggang Mei ◽  
Sixun Zheng
Keyword(s):  
Shape Memory ◽  
Ring Opening ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Acyclic Diene Metathesis ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Shape Memory Properties ◽  
Hydrogenation Reactions ◽  
Diene Metathesis ◽  
Oligomeric Silsesquioxane

Organic–inorganic polyethylene (PE) telechelics with polyhedral oligomeric silsesquioxane termini were synthesized via the combination of acyclic diene metathesis, ring-opening metathesis polymerization and hydrogenation reactions.

Polydispersity control in ring opening metathesis polymerization of amphiphilic norbornene diblock copolymers

Polymer ◽  
2003 ◽  
Vol 44 (17) ◽  
pp. 4943-4948 ◽  
Author(s):  
Sufi R Ahmed ◽  
Steven E Bullock ◽  
Arthur V Cresce ◽  
Peter Kofinas
Keyword(s):  
Ring Opening ◽  
Diblock Copolymers ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization

Stereoretentive Ring-Opening Metathesis Polymerization to Access All-cis Poly(p-phenylene vinylene)s with Living Characteristics

2020 ◽  
Author(s):  
Ting-Wei Hsu ◽  
Cheoljae Kim ◽  
Quentin Michaudel
Keyword(s):  
Organic Material ◽  
Ring Opening ◽  
Diblock Copolymers ◽  
Conductive Polymer ◽  
Synthetic Methods ◽  
Phenylene Vinylene ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Molecular Weights ◽  
Responsive Polymers

Poly(p-phenylene vinylene)s (PPVs), a staple of the conductive polymer family, consist of alternating alkene and phenyl groups in conjugation. The physical properties of this organic material are intimately linked to the cis/trans configuration of the alkene groups. While many synthetic methods afford PPVs with alltrans stereochemistry, very few deliver the all-cis congeners. We report herein the first synthesis of all-cis PPVs with living characteristics via stereoretentive ring-opening metathesis polymerization (ROMP). Exquisite catalyst control allows for the preparation of homopolymers or diblock copolymers with perfect stereoselectivity, narrow dispersities, and predictable molecular weights. All-cis PPVs can then serve as light-responsive polymers through clean photoisomerization of the stilbenoid units.

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