Observing Proton–Electron Mixed Conductivity in Graphdiyne

Observing Proton–Electron Mixed Conductivity in Graphdiyne

Advanced Materials

10.1002/adma.202400950

http://dx.doi.org/10.1002/adma.202400950

Jiaofu Li, Cong Wang, Jiangtao Su, Zhihua Liu, Hangming Fan, Changxian Wang, Yanzhen Li, Yongli He, Nuan Chen, Jinwei Cao, Xiaodong Chen

graphdiyne, proton-electron conductivity, flexible sensors and switches, human-machine interface, assistive technology

06 April 2024

Li, J., Wang, C., Su, J., Liu, Z., Fan, H., Wang, C., Li, Y., He, Y., Chen, N., Cao, J., & Chen, X. (2024). Observing Proton–Electron Mixed Conductivity in Graphdiyne. Advanced Materials, 36(25). Portico. https://doi.org/10.1002/adma.202400950

Mixed conducting materials with both ionic and electronic conductivities have gained prominence in emerging applications. However, exploring material with on‐demand ionic and electronic conductivities remains challenging, primarily due to the lack of correlating macroscopic conductivity with atom‐scale structure. Here, the correlation of proton–electron conductivity and atom‐scale structure in graphdiyne is explored. Precisely adjusting the conjugated diynes and oxygenic functional groups in graphdiyne yields a tunable proton–electron conductivity on the order of 103. In addition, a wet‐chemistry lithography technique for uniform preparation of graphdiyne on flexible substrates is provided. Utilizing the proton–electron conductivity and mechanical tolerance of graphdiyne, bimodal flexible devices serving as capacitive switches and resistive sensors are created. As a proof‐of‐concept, a breath–machine interface for sentence‐based communication and self‐nursing tasks with an accuracy of 98% is designed. This work represents an important step toward understanding the atom‐scale structure–conductivity relationship and extending the applications of mixed conducting materials to assistive technology.

Publisher Copyright

This research / project is supported by the Agency for Science, Technology and Research (A*STAR) - Manufacturing, Trade, and Connectivity Programmatic Fund - Scent Digitalization and Computation
Grant Reference no. : M23L8b0049

This research / project is supported by the National Research Foundation - Smart Grippers for Soft Robotics Programme
Grant Reference no. :

This is the peer reviewed version of the following article: Li, J., Wang, C., Su, J., Liu, Z., Fan, H., Wang, C., Li, Y., He, Y., Chen, N., Cao, J., & Chen, X. (2024). Observing Proton–Electron Mixed Conductivity in Graphdiyne. Advanced Materials, 36(25). Portico. https://doi.org/10.1002/adma.202400950, which has been published in final form at https://doi.org/10.1002/adma.202400950. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

https://oar.a-star.edu.sg/communities-collections/articles/21397

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