Integrated opposite charge grafting induced ionic-junction fiber

Yi Xing; Mingjie Zhou; Yueguang Si; Chi-Yuan Yang; Liang-Wen Feng; Qilin Wu; Fei Wang; Xiaomin Wang; Wei Huang; Yuhua Cheng; Ruilin Zhang; Xiaozheng Duan; Jun Liu; Ping Song; Hengda Sun; Hongzhi Wang; Jiayi Zhang; Su Jiang; Meifang Zhu; Gang Wang

doi:10.1038/s41467-023-37884-0

Integrated opposite charge grafting induced ionic-junction fiber

Nat Commun. 2023 Apr 24;14(1):2355. doi: 10.1038/s41467-023-37884-0.

Authors

Yi Xing^#¹, Mingjie Zhou^#², Yueguang Si³, Chi-Yuan Yang⁴, Liang-Wen Feng⁵, Qilin Wu¹, Fei Wang², Xiaomin Wang², Wei Huang⁶, Yuhua Cheng⁶, Ruilin Zhang⁷, Xiaozheng Duan⁷, Jun Liu⁸, Ping Song⁸, Hengda Sun¹, Hongzhi Wang¹, Jiayi Zhang³, Su Jiang², Meifang Zhu¹, Gang Wang⁹

Affiliations

¹ State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 201620, Shanghai, China.
² Department of Hand Surgery, Center for the Reconstruction of Limb Function, National Clinical Research Center for Aging and Medicine, Huashan Hospital; Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital; NHC Key Laboratory of Hand Reconstruction, Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Institute of Hand Surgery, Fudan University, 200040, Shanghai, China.
³ State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Brain Science, Department of Ophthalmology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
⁴ Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-601 74, Norrköping, Sweden.
⁵ College of Chemistry, Sichuan University, 610064, Chengdu, China.
⁶ School of Automation Engineering, University of Electronic Science and Technology of China, 611731, Chengdu, China.
⁷ State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, Jilin, China.
⁸ National Key Laboratory on Electromagnetic Environmental Effects and Eletro-optical Engineering, 210007, Nanjing, China.
⁹ State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 201620, Shanghai, China. gwf8707@dhu.edu.cn.

^# Contributed equally.

Abstract

The emergence of ionic-junction devices has attracted growing interests due to the potential of serving as signal transmission and translation media between electronic devices and biological systems using ions. Among them, fiber-shaped iontronics possesses a great advantage in implantable applications owing to the unique one-dimensional geometry. However, fabricating stable ionic-junction on curved surfaces remains a challenge. Here, we developed a polyelectrolyte based ionic-junction fiber via an integrated opposite charge grafting method capable of large-scale continuous fabrication. The ionic-junction fibers can be integrated into functions such as ionic diodes and ionic bipolar junction transistors, where rectification and switching of input signals are implemented. Moreover, synaptic functionality has also been demonstrated by utilizing the fiber memory capacitance. The connection between the ionic-junction fiber and sciatic nerves of the mouse simulating end-to-side anastomosis is further performed to realize effective nerve signal conduction, verifying the capability for next-generation artificial neural pathways in implantable bioelectronics.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Electronics*
Ions / metabolism
Mice
Neural Conduction*
Polyelectrolytes
Sciatic Nerve / metabolism

Substances

Ions
Polyelectrolytes