Synthesis and Characterization of PDMS‐, PVP‐, and PS‐Containing ABCBA Pentablock Copolymers

Pavlović, Dražen; Linhardt, Jeffrey G.; Künzler, Jay F.; Shipp, Devon A.

doi:10.1002/macp.200900523

Cited by 22 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Atom transfer radical polymerization (ATRP) is a popular method for the synthesis of PDMS block copolymers . So we synthesized amphiphilic POEGMA‐PDMS‐POEGMA block copolymers by ATRP, using a macroinitiator α,ω‐dibromo polydimethylsiloxane (Br‐PDMS‐Br).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, self-assembly, and thermosensitivity of amphiphilic POEGMA-PDMS-POEGMA triblock copolymers

Wang

Chen

Guo

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

In this article, the synthesis and self‐assembly of a novel well‐defined biocompatible amphiphilic POEGMA‐PDMS‐POEGMA triblock copolymer were studied. The copolymer was synthesized by atom transfer radical polymerization of oligo(ethylene glycol) methyl ether methacrylate (OEGMA) using α,ω‐dibromo polydimethylsiloxane macroinitiator (Br‐PDMS‐Br). Br‐PDMS‐Br was synthesized through the esterification of α,ω‐hydroxypropyl polydimethylsiloxane and 2‐bromoisobutyryl bromide. The structures of the copolymers were confirmed by proton nuclear magnetic resonance spectroscopy, and gel permeation chromatography. The copolymers showed reversible aggregation in response to temperature cycles with a lower critical solution temperature (LCST) between 61 and 66 °C, as determined by ultraviolet‐visible spectrophotometry and dynamic light scattering. The LCST values increased in proportion to the length of the hydrophilic block and were lower than that of the POEGMA homopolymer. The self‐assembly behavior of the copolymers in aqueous solution was investigated by fluorescence spectroscopy and transmission electron microscopy. The critical micelle concentration value (1.08–0.26 10−6 mol L−1) decreased as the length of the POEGMA chain increased. The POEGMA‐PDMS‐POEGMA copolymers can easily self‐assemble into spherical micelles in aqueous solution. Such biocompatible block copolymers may be attractive candidates as ‘‘smart'' thermo‐responsive drug delivery systems. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 2684‐2691

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, self-assembly, and thermosensitivity of amphiphilic POEGMA-PDMS-POEGMA triblock copolymers

Wang

Chen

Guo

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…[205] Further examples of the synthesis of polymers by a combination of ATRP and RAFT have been reported. [185,525,618] This can involve preparing one block comprising a MAM by ATRP and then a second block comprising a LAM by RAFT.…”

mentioning

confidence: 99%

Living Radical Polymerization by the RAFT Process – A Third Update

2012

View full text Add to dashboard Cite

This paper provides a third update to the review of reversible deactivation radical polymerization (RDRP) achieved with thiocarbonylthio compounds (ZC(¼S)SR) by a mechanism of reversible addition-fragmentation chain transfer ( Chem. 2009Chem. , 62, 1402. This review cites over 700 publications that appeared during the period mid 2009 to early 2012 covering various aspects of RAFT polymerization which include reagent synthesis and properties, kinetics and mechanism of polymerization, novel polymer syntheses, and a diverse range of applications. This period has witnessed further significant developments, particularly in the areas of novel RAFT agents, techniques for end-group transformation, the production of micro/nanoparticles and modified surfaces, and biopolymer conjugates both for therapeutic and diagnostic applications.

show abstract

“…Block copolymers comprising of “more‐activated monomers” (MAM) (e.g., styrene, (meth)acrylates, (meth)acrylamides, acrylonitrile) and “less‐activated monomers” (LAM) (e.g., vinyl acetate, N ‐vinylpyrolidone) are of synthetic value but challenging. This type of block copolymers has been prepared by a combination of ATRP ‐Ŧ‐ RAFT polymerization . For most cases, ATRP is used to prepare the first MAM block, then the initiator end functionality is converted to a xanthate end‐group, where the resultant macro‐RAFT agent is used to prepare the LAM block.…”

Section: Transformations From Atrpmentioning

confidence: 99%

Polymer Synthesis with More Than One Form of Living Polymerization Method

Guo

Choi

Feng

et al. 2018

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Controlled radical polymerization (CRP) or controlled/living radical polymerization has revolutionized the polymer industry as a tool for the preparation of a wide variety of polymers. This process enables the preparation of polymers with good control of molecular weight, narrow polydispersity, and a range of architectures including block and graft copolymers, star polymers, and other functional polymers. The mechanistic transformation reaction provides a great opportunity to tune chemical and physical properties of copolymers. It can be applied to combine different homopolymers using post‐modification techniques or by the use of a dual initiator, allowing the combination of mechanistically distinct polymerization reactions. This review will cover CRP transformations including the synthesis of block copolymers with both linear structures (AB, ABA, (AB) n , multiblocks, etc.) and branched macromolecular architectures (graft, miktoarm star, and dendritic‐like), which are obtained by a combination of more than one form of living polymerization reaction.

show abstract

Synthesis and Characterization of PDMS‐, PVP‐, and PS‐Containing ABCBA Pentablock Copolymers

Cited by 22 publications

References 31 publications

Synthesis, self-assembly, and thermosensitivity of amphiphilic POEGMA-PDMS-POEGMA triblock copolymers

Synthesis, self-assembly, and thermosensitivity of amphiphilic POEGMA-PDMS-POEGMA triblock copolymers

Living Radical Polymerization by the RAFT Process – A Third Update

Polymer Synthesis with More Than One Form of Living Polymerization Method

Contact Info

Product

Resources

About