文献类型：期刊文献

英文题名：Acylhydrazine-based reticular hydrogen bonds enable robust, tough, and dynamic supramolecular materials

作者：Deng, Yuanxin[1,2,3,4];Zhang, Qi[1,2,3,4];Shi, Chenyu[1,2];Toyoda, Ryojun[3,4];Qu, Da-Hui[1,2];Tian, He[1,2];Feringa, Ben L.[1,2,3,4]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem,Sch Ch, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Univ Groningen, Fac Sci & Engn, Stratingh Inst Chem, Nijenborgh 4, NL-9747 AG Groningen, Netherlands;[4]Univ Groningen, Fac Sci & Engn, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

年份：2022

卷号：8

期号：4

外文期刊名：SCIENCE ADVANCES

收录：;EI(收录号：20220511555102);WOS:【SCI-EXPANDED(收录号:WOS:000799989900010)】；

基金：This work was supported by the National Natural Science Foundation of China grants 22025503 (D.-H.Q.), 21790361 (H.T.), and 21871084 (D.-H.Q.); Shanghai Municipal Science and Technology Major Project grant 2018SHZDZX03 (H.T.); the Programme of Introducing Talents of Discipline to Universities grant B16017 (H.T.); the Shanghai Science and Technology Committee grant 17520750100 (H.T.); Program of Shanghai Academic/Technology Research Leader grant 19XD1421100 (D.-H.Q.), the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska Curie grant agreement grant 101025041 (Q.Z.), and the Netherlands Ministry of Education, Culture, and Science, Gravitation program, 024.601035 (B.L.F.).

语种：英文

外文关键词：Supramolecular chemistry - Sulfur compounds - Economic and social effects

摘要：Supramolecular materials are widely recognized among the most promising candidates for future generations of sustainable plastics because of their dynamic functions. However, the weak noncovalent cross-links that endow dynamic properties usually trade off materials' mechanical robustness. Here, we present the discovery of a simple and robust supramolecular cross-linking strategy based on acylhydrazine units, which can hierarchically cross-link the solvent-free network of poly(disulfides) by forming unique reticular hydrogen bonds, enabling the conversion of soft into stiff dynamic material. The resulting supramolecular materials exhibit increase in stiffness exceeding two to three orders of magnitude compared to those based on the hydrogen-bonding network of analogous carboxylic acids, simultaneously preserving the repairability, malleability, and recyclability of the materials. The materials also show high adhesion strength on various surfaces while allowing multiple surface attachment cycles without fatigue, illustrating a viable approach how robustness and dynamics can be merged in future material design.