Hyperbranched Multicyclic Polymer Built from Tailored Multifunctional Monocyclic Prepolymer
Related Experiment Video
Updated: Jan 24, 2026

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
Chao Liu1, Wen Xu1, Hua-Long Zhang1
1Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Abstract:
A simple and efficient method to construct a hyperbranched multicyclic polymer is introduced. First, a tailored trithiocarbonate with two terminal anthracene units and three azide groups is successfully synthesized, and this multifunctional trithiocarbonate is used as chain transfer agent (CTA) to afford anthracene-telechelic polystyrene (PS) via reversible addition-fragmentation chain transfer (RAFT) polymerization. After that, linear PS is irradiated under 365 nm UV light to achieve the cyclization process. The monocyclic polymer further reacts with sym-dibenzo-1,5-cyclooctadiene-3,7-diyne via "A2 +B3 " strategy based on a self-accelerating click reaction to produce hyperbranched multicyclic polymer. The structures and properties of the polymers are characterized by nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), UV-vis spectrophotometry, and triple-detection size-exclusion chromatography (TD-SEC). The number of monocyclic units of the resultant hyperbranched multicyclic polymer reaches about 21 based on multi-angle laser light scattering (MALLS) measurements. The plot of intrinsic viscosity versus molecular weight reveals that the α value of the unique hyperbranched multicyclic polymer is lower than both hyperbranched polymers and cyclic polymers.
Related Concept Videos
Polymers
Polymers
Polymer Classification: Architecture
Polymer Classification: Crystallinity
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Polymer Classification: Stereospecificity
Polymers: Defining Molecular Weight
The number average molecular weight (Mn) is the summation of the number...

