Combining Living Anionic Polymerization with Branching Reactions in an Iterative Fashion to Design Branched Polymers

Higashihara, Tomoya; Sugiyama, Kenji; Yoo, Hee‐Soo; Hayashi, Mayumi; Hirao, Akira

doi:10.1002/marc.200900773

Cited by 55 publications

(37 citation statements)

References 154 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The best model polymers for the verification of theoretical calculations and assumptions are the polymer systems obtained by the step-by-step synthesis [27,68,[79][80][81][82][83][84]. Firstly, by anionic polymerization polymers with a narrow molecularweight distribution are obtained.…”

Section: Synthesis Methods For Branched Polymer Systemsmentioning

confidence: 99%

Features of the intramolecular structure of branched polymer systems in solution

2014

View full text Add to dashboard Cite

The review is devoted to the synthesis and properties of branched polymer structures of a controlled molecular architecture. The work considers the main methods to obtain branched macromolecules. The results of both theoretical calculations and experimental studies of the structure and features of the behavior of the mentioned systems in solution are analyzed and generalized. The promising use of branched polymer systems as an alternative to linear systems is noted.

show abstract

Section: Synthesis Methods For Branched Polymer Systemsmentioning

confidence: 99%

Features of the intramolecular structure of branched polymer systems in solution

2014

View full text Add to dashboard Cite

show abstract

“…In these isomers, the molecular weights were very close and the molecular weight distributions were narrow. The number of branching points (45) and surface hydroxyl groups (48) were identical among various isomers. The difference among these isomers was the radial location of branch points tuned by controlling the molecular weights in ROP and coupling with different generations of dendrons.…”

Section: Pcl-based Dendrimer-like Polymersmentioning

confidence: 99%

Synthesis of Dendrimer-Like Polymers

Yang

2015

Anionic Polymerization

View full text Add to dashboard Cite

This chapter reviews the synthesis of dendrimer-like polymers based on controlled or living polymerization techniques. Dendrimer-like polymers possess multiple chains interconnected in a dendritic way. The synthetic strategies include divergent and convergent methods, as those for regular dendrimers, in combination with the preparation of the polymer chains either in situ or in separate batches. The divergent approach usually starts from a core with multifunctional initiation or coupling reaction sites, followed by iterative polymerization/chain-end functionalization, or grafting-to reaction/end-group transformation of the upcoming polymer chains, respectively, to form dendrimer-like polymers of up to seventh generation. The convergent approach involves efficient coupling reactions, such as reaction between chlorosilane and living polymeric anion, and the reactivation of the joint point into living anion in an alternating way. The latter suffers from more serious steric hindrance than the former. A variety of dendrimer-like polymers, such as poly (ethylene oxide) (PEO), polystyrene (PS), poly(meth)acrylates, polycaprolactone (PCL), and their related copolymers, have been reported in the literature. The control of molecular parameters of dendrimer-like products will be discussed in the synthetic point of view.

show abstract

“…This class of polymers has the benefit of controlling the design, as well as versatile construction [49][50][51][52][53][54][55]. Consequently, these are promising candidates for light-harvesting systems, drug delivery, storage information, and catalysis [52,56,57].…”

Section: Star and Dendritic Architectures Incorporating Azo Moleculesmentioning

confidence: 99%

Proton Sensing Color Changing Organoiron and Organic Macromolecules

Okasha

2015

J Inorg Organomet Polym

View full text Add to dashboard Cite

Macromolecules incorporating photoactive species have become one of the most important topics in literature for the search of new materials with tunable properties. In particular, azobenzene-containing polymers have witnessed important developments in order to build up novel, smart materials for various useful purposes. The majority of these materials were completely organic macromolecules, however in recent years, azo dyes have been merged into organometallic polymers. Our group was one of the pioneers in this field via functionalization of organoiron macromolecules with aryl and hetaryl azo moieties. The combination of azo chromophore with organometallic macromolecules can tune the properties of the obtained polymers and increase the possibility of their applications in fields such as reversible optical storage systems, electrooptic modulators, labeling, photorefractive switches and biomedicine. Herein, we are highlighting the synthesis and characterization of various classes of highly colored organo and/or organoiron polymers and illustrating their possible applications.

show abstract

Combining Living Anionic Polymerization with Branching Reactions in an Iterative Fashion to Design Branched Polymers

Cited by 55 publications

References 154 publications

Features of the intramolecular structure of branched polymer systems in solution

Features of the intramolecular structure of branched polymer systems in solution

Synthesis of Dendrimer-Like Polymers

Proton Sensing Color Changing Organoiron and Organic Macromolecules

Contact Info

Product

Resources

About