pH and ionic strength responsive polyelectrolyte block copolymer micelles prepared by ring opening metathesis polymerization

2009 ◽  
Vol 47 (4) ◽  
pp. 1178-1191 ◽  
Author(s):  
Kurt Stubenrauch ◽  
Ilja Voets ◽  
Gerhard Fritz-Popovski ◽  
Gregor Trimmel
Keyword(s):  
Ionic Strength ◽  
Block Copolymer ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles

Donnan Equilibria in Polymeric Micellar Systems with Weak Polyelectrolyte Shells: The Lowering of the pH Value

1997 ◽  
Vol 62 (11) ◽  
pp. 1730-1736 ◽  
Author(s):  
Petr Munk ◽  
Zdeněk Tuzar ◽  
Karel Procházka
Keyword(s):  
Ionic Strength ◽  
Block Copolymer ◽  
Ph Value ◽  
Electrolyte Solutions ◽  
Hydrogen Ions ◽  
Micellar Systems ◽  
Weak Electrolytes ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles ◽  
Polyelectrolyte Solutions

When two electrolyte solutions are separated and only some of the ions can cross the boundary, the concentrations of these ions are different on both sides of the boundary. This is the well-known Donnan effect. When weak electrolytes are involved, the imbalance includes also hydrogen ions: there is a difference of pH across the boundary and the dissociation of nondiffusible weak electrolytes is suppressed. The effect is very pronounced when the concentration of the weak electrolyte is high and ionic strength is low. The significance of this phenomenon is discussed for polyelectrolyte solutions, and particularly for block copolymer micelles with weak polyelectrolyte shells. The effect is quite dramatic in the latter case.

A donor–acceptor conjugated block copolymer of poly(arylenevinylene)s by ring-opening metathesis polymerization

2015 ◽  
Vol 51 (44) ◽  
pp. 9113-9116 ◽  
Author(s):  
Shu-Wei Chang ◽  
Masaki Horie
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Donor Acceptor

A donor–acceptor conjugated block copolymer of poly(arylenevinylene)s has been synthesized by ring-opening metathesis polymerization.

UV-induced crosslinking of ring opening metathesis block copolymer micelles

2008 ◽  
Vol 46 (7) ◽  
pp. 2402-2413 ◽  
Author(s):  
Martina Sandholzer ◽  
Sabine Bichler ◽  
Franz Stelzer ◽  
Christian Slugovc
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles

Structure of pH-Dependent Block Copolymer Micelles:  Charge and Ionic Strength Dependence

2002 ◽  
Vol 35 (22) ◽  
pp. 8540-8551 ◽  
Author(s):  
Albert S. Lee ◽  
Vural Bütün ◽  
M. Vamvakaki ◽  
Steven P. Armes ◽  
John A. Pople ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Block Copolymer ◽  
Ionic Strength Dependence ◽  
Strength Dependence ◽  
Block Copolymer Micelles ◽  
Ph Dependent ◽  
Copolymer Micelles

scholarly journals Synthesis of highly stable dual-site immobilized ruthenium olefin metathesis catalyst without ru leaching

2021 ◽  
Vol 2131 (4) ◽  
pp. 042055
Author(s):  
Huanhuan Zhao ◽  
Yanwu Zhang
Keyword(s):  
Block Copolymer ◽  
Olefin Metathesis ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Ring Closing Metathesis ◽  
Metathesis Polymerization ◽  
Immobilized Catalyst ◽  
Excellent Activity ◽  
Metathesis Catalyst ◽  
Dual Site

Abstract The tri-block copolymer is used as a carrier to simultaneously immobilize the N-heterocyclic and benzylidene ligands precursor of the Ru-based catalyst to form a dual-site immobilized catalyst. The dual-site immobilized catalyst can catalyze ring-opening metathesis polymerization, ring-closing metathesis and self-metathesis. The dual-site immobilized catalyst shows good heterogeneity in dichloromethane, which simplifies the purification of product and recovery of catalyst. The dual-site immobilized catalyst exhibits excellent activity and recycling performance. The excellent recyclability can be attributed to the capture of ruthenium by the excess ligands precursor on carrier. Importantly, ruthenium residues are not detected in product.

Assembly of Catechol-Modified Polymer Brushes for Drug Delivery

2021 ◽  
Author(s):  
Kaijie Zhao ◽  
Zhiliang Gao ◽  
Dongpo Song ◽  
Peiyu Zhang ◽  
Jiwei Cui
Keyword(s):  
Drug Delivery ◽  
Block Copolymer ◽  
Polymer Brushes ◽  
Ring Opening ◽  
Biomedical Applications ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Modified Polymer

Therapeutic nanoparticles (NPs) have shown their potential for biomedical applications (e.g., drug delivery). In this study, we report the synthesis of a bottlebrush block copolymer by ring opening metathesis polymerization...

scholarly journals ROMPI-CDSA: ring-opening metathesis polymerization-induced crystallization-driven self-assembly of metallo-block copolymers

2019 ◽  
Vol 10 (42) ◽  
pp. 9782-9787 ◽  
Author(s):  
Ye Sha ◽  
Md Anisur Rahman ◽  
Tianyu Zhu ◽  
Yujin Cha ◽  
C. Wayne McAlister ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
One Pot ◽  
Metathesis Polymerization ◽  
Induced Crystallization

Two most prevailing self-assembly methods, PISA and CDSA, are combined in one metallo-block copolymer system via one-pot synchronous ROMP, yielding crystalline nanostructures in a mild, fast, scalable and controlled manner.

Biofunctionalized block copolymer nanoparticles based on ring-opening metathesis polymerization

2005 ◽  
Vol 44 (2) ◽  
pp. 928-939 ◽  
Author(s):  
Alvaro Carrillo ◽  
Mallinamadugu J. Yanjarappa ◽  
Kunal V. Gujraty ◽  
Ravi S. Kane
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization
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