Ultrasensitive conductive hydrogels conferred by nanoscale synergistic effect

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Science China Materials Pub Date : 2024-11-07 DOI:10.1007/s40843-024-3143-1

Gangrong Wang (, ), Xin Jing (, ), Binghan Niu (, ), Liya Lin (, ), Yaoxun Zhang (, ), Jiazhou Zeng (, ), Peiyong Feng (, ), Yuejun Liu (, ), Hao-Yang Mi (, )

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Abstract

The inherent limitations of hydrogels, such as low electrical conductivity and inadequate sensitivity, present considerable challenges in flexible electronic applications. To address these issues, we proposed an innovative synthesis technique that synergistically leveraged the nanoscale properties of the conductive fillers including one-dimensional polyaniline and two-dimensional reduced graphene oxide to fabricate hydrogels with exceptional conductivity. This advanced hydrogel exhibited an extraordinary sensitivity with a gauge factor of 27.55, impressive electrical conductivity (7.2 mS/cm), and outstanding stability. Additionally, the hydrogel demonstrated excellent self-adhesion and robust self-healing properties, attributed to its abundant catechol functionalities, hydrogen bonding interactions, and π-π stacking. Consequently, the flexible, strain-sensitive, self-powered sensors derived from these hydrogels displayed unparalleled sensing performance, positioning them as highly promising candidates for advanced human-computer interaction systems and sophisticated information transmission applications.

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纳米级协同效应赋予的超灵敏导电水凝胶

水凝胶的固有局限性，如低导电性和灵敏度不足，在柔性电子应用中提出了相当大的挑战。为了解决这些问题，我们提出了一种创新的合成技术，协同利用导电填料的纳米级特性，包括一维聚苯胺和二维还原氧化石墨烯，来制造具有优异导电性的水凝胶。这种先进的水凝胶具有非凡的灵敏度，其测量因子为27.55，电导率（7.2 mS/cm）令人印象深刻，并且具有出色的稳定性。此外，由于其丰富的儿茶酚功能、氢键相互作用和π-π堆叠，水凝胶表现出优异的自粘附和强大的自修复性能。因此，由这些水凝胶衍生的柔性、应变敏感、自供电传感器显示出无与伦比的传感性能，使其成为先进人机交互系统和复杂信息传输应用的极有前途的候选者。

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.