School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, 200240, Shanghai, China.
Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 201620, Shanghai, China.
Nat Commun. 2022 Oct 30;13(1):6487. doi: 10.1038/s41467-022-34285-7.
Micropatterning various ion-based modality materials offers compelling advantages for functionality enhancement in iontronic pressure sensing, piezoionic mechanoreception, and skin-interfaced electrode adhesion. However, most existing patterning techniques for iontronic materials suffer from low flexibility and limited modulation capability. Herein, we propose a facile and robust method to fabricate hierarchical and asymmetrical iontronic micropatterns (denoted as HAIMs) through programmed regulation of the internal stress distribution and the local ionic migration among an iontronic host. The resultant HAIMs with arbitrarily regulated morphologies and region-dependent ionic electrical performance can be readily made via localized photodimerization of an anthracene-functionalized ionic liquid copolymer (denoted as An-PIL) and subsequent vapor oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT). Based on the piezoionic effect within the resultant distinct doped PEDOT, HAIMs can serve as a scalable iontronic potential generator. Successful syntheses of these fascinating micropatterns may accelerate the development of patterned iontronic materials in a flexible, programmable, and functionally adaptive form.
微图案化各种基于离子的模态材料为离子电子压力感应、压电化学机械感知和皮肤界面电极附着的功能增强提供了引人注目的优势。然而，大多数现有的离子电子材料的图案化技术具有较低的灵活性和有限的调制能力。在此，我们提出了一种简便而强大的方法，通过程序调控离子电子主体中的内部分布和局部离子迁移来制备分层和不对称的离子电子微图案（表示为 HAIMs）。通过蒽功能化离子液体共聚物（表示为 An-PIL）的局部光二聚化以及随后的 3,4-亚乙基二氧噻吩（EDOT）的蒸气氧化聚合，可轻松获得具有任意调节形态和区域相关离子电性能的所得 HAIMs。基于所得掺杂 PEDOT 中的压电化学效应，HAIMs 可用作可扩展的离子电子势发生器。这些迷人的微图案的成功合成可能会加速灵活、可编程和功能自适应形式的图案化离子电子材料的发展。
