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Title
Japanese:Effective Design for Long-Range Polymer Ordering Using Triptycene-Containing Side Chains 
English:Effective Design for Long-Range Polymer Ordering Using Triptycene-Containing Side Chains 
Author
Japanese: 于佳トウ, 板垣 絢美, CHENYugen, 福井 智也, 石割 文崇, 梶谷 孝, 福島 孝典.  
English: Kato U, A. Itagaki, Yugen Chen, T. Fukui, F. Ishiwari, T. Kajitani, T. Fukushima.  
Language English 
Journal/Book name
Japanese:Macromolecules 
English:Macromolecules 
Volume, Number, Page Volume 56    Issue 12    Page 4556–4565
Published date June 2023 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://doi.org/10.1021/acs.macromol.3c00795
 
DOI https://doi.org/10.1021/acs.macromol.3c00795
Abstract Spontaneous long-range structural ordering of polymers can lead to improvements in their physical properties and the emergence of functions that cannot be expected in their amorphous states. We have demonstrated a design strategy to achieve structuring of various polymers using a particular type of triptycene, capable of forming a two-dimensional assembly. In this study, we investigated what designs are effective for achieving long-range polymer ordering by incorporating this triptycene motif into the side chains of polymers. Using poly(n-butyl acrylate) as a fundamental polymer, we synthesized three types of copolymers, i.e., random, diblock, and ABA-type triblock copolymers, through RAFT polymerization protocols and found that the presence of block segments is essential to achieve polymer ordering, which in turn results in dramatically improved mechanical properties. Here, we also show that poly(N-isopropylacrylamide)-based copolymers with triptycene-containing side chains undergo an interesting anisotropic expansion and contraction microscopically in response to temperature.

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