3D Printable Supramolecular Viologen-Cationic Polyurethane Ionotronics for Multimodal Sensing and Displays

被引:0
|
作者
Fan, Qingchao [1 ,2 ]
Jiang, Xin [3 ]
Zhang, Yingchao [3 ]
Ge, Lei [3 ]
Yang, Weifeng [1 ]
Li, Junwei [2 ]
Li, Yue [3 ,4 ,5 ]
Wu, Kunlin [2 ]
Wu, Xilu [1 ]
Zhang, Qinghong [1 ]
Li, Yaogang [1 ]
Hou, Chengyi [1 ]
Li, Kerui [1 ]
Yu, Jing [3 ]
Wang, Yifan [2 ]
Wang, Hongzhi [1 ,6 ]
机构
[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[4] Northwestern Polytech Univ, Frontiers Sci Ctr Flexible Elect, Xian 710072, Peoples R China
[5] Northwestern Polytech Univ, Inst Flexible Elect, Xian 710072, Peoples R China
[6] Shanghai Dianji Univ, Sch Mat Sci & Engn, Shanghai 201306, Peoples R China
关键词
3D printing; electrochromic material; ionic polyurethanes; multifunctional sensors; wearable displays;
D O I
10.1002/smll.202412798
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ionic polyurethanes with excellent properties have garnered significant attention in flexible wearables. However, it is still challenging to achieve ionic polyurethane ionotronics with both excellent mechanical properties and functionalization. Here, a series of hydroxypropyl viologen (HDPV) cationic-based supramolecular polyurethane with tunable strength (7.6-76.6 MPa), toughness (29.1-285.3 MJ m(-3)), and elongation (499.8%-1102.3%) are developed by balancing HDPV cations and dynamic sextuple hydrogen bonds into the polyurethane. Dynamic modulation of the mechanical and electrochromic properties of the polyurethane can be achieved by adjusting the content of HDPV cations and dynamic sextuple bonds. Strong electrostatic interactions between the HDPV cationic-based polyurethane and the ionic liquid resulted in the preparation of ionogels with excellent pressure/strain and temperature sensing properties. Additionally, benefiting from the redox properties of the polycationic backbone, electrochromic devices fabricated from HDPV cationic-based polyurethane demonstrated a high modulation range of 79.1%, a certain degree of color memory effect, and excellent cycling stability. Shape customization of flexible electrochromic devices of HDPV cationic-based polyurethane can be achieved by 3D printing technology. The study paves a new avenue for the fabrication of flexible visual ionotronics with high stability and versatility.
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页数:11
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