[an error occurred while processing this directive]

高等学校化学研究 ›› 2023, Vol. 39 ›› Issue (5): 777-781.doi: 10.1007/s40242-023-3056-7

• Articles • 上一篇    下一篇

Phototriggered Formation of a Supramolecular Polymer Network Based on Orthogonal H-Bonding and Host-Guest Recognition

BAI Ruixue, YANG Xue, ZHAO Jun, ZHANG Zhaoming, YAN Xuzhou   

  1. School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • 收稿日期:2023-03-01 出版日期:2023-10-01 发布日期:2023-09-26
  • 通讯作者: YAN Xuzhou, ZHANG Zhaoming E-mail:xzyan@sjtu.edu.cn;zhangzhaoming@sjtu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Nos.22122105, 22071152, 22101175 and 21901161), the Natural Science Foundation of Shanghai, China (No.20ZR1429200), and the State Key Laboratory Project for Mechanical Behavior of Materials, Xi'an Jiaotong University, China (No.20222409).

Phototriggered Formation of a Supramolecular Polymer Network Based on Orthogonal H-Bonding and Host-Guest Recognition

BAI Ruixue, YANG Xue, ZHAO Jun, ZHANG Zhaoming, YAN Xuzhou   

  1. School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • Received:2023-03-01 Online:2023-10-01 Published:2023-09-26
  • Contact: YAN Xuzhou, ZHANG Zhaoming E-mail:xzyan@sjtu.edu.cn;zhangzhaoming@sjtu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.22122105, 22071152, 22101175 and 21901161), the Natural Science Foundation of Shanghai, China (No.20ZR1429200), and the State Key Laboratory Project for Mechanical Behavior of Materials, Xi'an Jiaotong University, China (No.20222409).

摘要: Supramolecular polymer networks (SPNs) have gained increasing research attention due to their reversible and tunable nature in the preparation of adaptive materials. The use of hierarchical self-assembly techniques is an emerging strategy for the fabrication of smart supramolecular polymer networks, but corresponding study is still rare. Herein, we have reported a novel supramolecular polymer network through complementary host-guest interactions and phototriggered quadruple H-bonding cross-linking. Specifically, we design and synthesize an H1G1-type monomer consisting of a benzo-21-crown-7 (B21C7) host (H1), a dialkylammonium salt guest (G1) and a photolabile o-nitrobenzyl ether protected ureidopyrimidinone (Upy) moiety. B21C7 and ammonium moieties can first form a linear supramolecular polymer through complementary host-guest interactions. Under photoirradiation, the Upy groups on the SP side chains were released, and the obtained linear supramolecular polymer could be further transformed into SPN through a quadruple H-bonding cross-linking. Meanwhile, the in situ transformation in the solid state is also accompanied by pronounced enhancement in mechanical properties, which provides foundation for further application of materials in different scenarios.

关键词: Host-guest recognition, H-Bonding, Phototriggered transformation, Orthogonal

Abstract: Supramolecular polymer networks (SPNs) have gained increasing research attention due to their reversible and tunable nature in the preparation of adaptive materials. The use of hierarchical self-assembly techniques is an emerging strategy for the fabrication of smart supramolecular polymer networks, but corresponding study is still rare. Herein, we have reported a novel supramolecular polymer network through complementary host-guest interactions and phototriggered quadruple H-bonding cross-linking. Specifically, we design and synthesize an H1G1-type monomer consisting of a benzo-21-crown-7 (B21C7) host (H1), a dialkylammonium salt guest (G1) and a photolabile o-nitrobenzyl ether protected ureidopyrimidinone (Upy) moiety. B21C7 and ammonium moieties can first form a linear supramolecular polymer through complementary host-guest interactions. Under photoirradiation, the Upy groups on the SP side chains were released, and the obtained linear supramolecular polymer could be further transformed into SPN through a quadruple H-bonding cross-linking. Meanwhile, the in situ transformation in the solid state is also accompanied by pronounced enhancement in mechanical properties, which provides foundation for further application of materials in different scenarios.

Key words: Host-guest recognition, H-Bonding, Phototriggered transformation, Orthogonal