Polyallene-based amphiphilic triblock copolymer via successive free radical polymerization and ATRP

Abstract

This article reports the synthesis of amphiphilic double-bond-containing ABA triblock copolymer by a combination of free radical polymerization and ATRP.

Recent Advances in Polyallenes: Preparation, Self‐Assembly, and Stimuli‐Responsiveness

“…In addition to pH‐responsive polyallene‐based copolymers, thermo‐responsive polyallene‐contained triblock copolymer consisting of PPOA and poly(oligo(ethylene glycol) methyl ether methacrylate) (POEGMM) blocks has been investigated, too [57] . The thermo‐responsive POEGMM‐ b ‐PPOA‐ b ‐POEGMM was prepared via the combination of free radical polymerization with ATRP.…”

Highly Regioselective and Helix-Sense Selective Living Polymerization of Phenyl and Alkoxyallene Using Chiral Nickel(II) Catalysts

“…Helix is one of the most important secondary structural motifs in biopolymers and also in synthetic macromolecules. − The one-handed helical conformation adopted by biological macromolecules such as protein and DNA plays important living functions including molecular recognition, catalysis, inheritance, replication, and so on. − A slight damage on the helical structure of biomacromolecules can cause a variety of severe diseases. For example, misfolding the helix of proteins into an extended β-sheet may result in amyloid structures accompanied by grievous dysfunctions including Alzheimer’s disease, Parkinson’s disease, and diabetes. , Therefore, stimulated by the biological helices and functions, synthetic helical polymers have attracted great attention from synthetic chemistry to materials science and biological engineering. − These research studies not only explore the structure and property of the unique helices in nature but also develop new materials with novel functions. − Moreover, the study on a helical polymer can bring out a new structural platform for the development of novel functional materials. − Although the helical polymer is still on the preliminary research stage, it has exhibited a wide range of applications, such as those in enantiomer separation, chiral switch, asymmetric catalysis, circularly polarized luminescence (CPL), and optoelectronic devices among others. − From the reported helical polymers, polyallene is of particular interest because it contains reactive exo -double bonds along the backbone which can be further decorated with other intriguing functionalities. , Polyallene is generally produced through the radical polymerization or coordination polymerization of the corresponding allene monomers using transition-metal complexes as catalysts. , The living/controlled coordination polymerization can yield polyallenes with expected molecular mass and low polydispersity. , However, both the accumulated double bonds of allene monomers can be polymerized and result in polyallene with complex architectures. − Thus, developing a new method for living/controlled polymerization of allene monomers with high regioselectivity of the accumulated double bonds is greatly desired.…”

Cationic polymerization of n‐hexyloxyallene by using halogen‐bonding organocatalysts

“…Accordingly, the careful choice of initiating system is of much importance to obtain soluble polymers with the carbon–carbon double bond remained. Because of the wide potential application of poly(allene)s as reactive polymers and functional polymers, the development of new polymerization system is an attractive issue in the field of polymerization chemistry.…”