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RESEARCH ARTICLE
Contents Vol 67(1)

Dendrimer-Like Star-Branched Block Copolymers with Controlled Segment Sequence and their Star-Like Dendrigraft Derivatives

Chao Zhang A and Junpo He A B
+ Author Affiliations
- Author Affiliations

A The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China.

B Corresponding author. Email: jphe@fudan.edu.cn




Junpo He received his Ph.D. in polymer chemistry and physics in 1999 from Fudan University, and worked as a post-doctorate researcher at BASF, Ludwigshafen, from 2001 to 2003. He has been a full professor since 2007 at Fudan University. His research interests lie in the area of controlled radical polymerization kinetics, especially the mechanism and precise synthesis of polymers with various architectures using controlled radical and anionic polymerizations. He is on the advisory board of the European Polymer Journal.

Australian Journal of Chemistry 67(1) 31-38 https://doi.org/10.1071/CH13326
Submitted: 25 June 2013  Accepted: 23 July 2013   Published: 13 August 2013

Abstract

Star polymers with star-like arms, namely dendrimer-like star-branched block copolymers, were synthesised by anionic polymerisation with 1,3-bis(1-phenylethenyl)benzene (MDDPE) and divinylbenzene (DVB) as the coupling agents. The segment sequence was controlled by changing the polymerisation sequences of different monomers and coupling reactions. Two types of dendrimer-like star-branched block copolymers were prepared with polyisoprene (PI) block incorporated in the interior part or on the periphery. The PI chains in the resulting star copolymers were iteratively grafted through epoxidation and grafting reactions, forming star-like dendrigraft copolymers. The molecular conformation of the products in dilute solution was analysed by static and dynamic light scattering. These products adopt large sized globular conformation in dilute solution. Atomic force microscopy shows that the star-like dendrigraft copolymers appear as collapsed spheres on mica substrate.


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