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Porous polycarbene-bearing membrane actuator for ultrasensitive weak-acid detection and real-time chemical reaction monitoring

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Sun,  Jian-Ke
Ryan Guterman, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Guterman,  Ryan
Ryan Guterman, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

Lin,  Hui-Juan
Ryan Guterman, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Yuan,  Jiayin
Jiayin Yuan, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Sun, J.-K., Zhang, W., Guterman, R., Lin, H.-J., & Yuan, J. (2018). Porous polycarbene-bearing membrane actuator for ultrasensitive weak-acid detection and real-time chemical reaction monitoring. Nature Communications, 9(1): 1717. doi:10.1038/s41467-018-03938-x.


Cite as: http://hdl.handle.net/21.11116/0000-0001-4DCF-1
Abstract
Soft actuators with integration of ultrasensitivity and capability of simultaneous interaction with multiple stimuli through an entire event ask for a high level of structure complexity, adaptability, and/or multi-responsiveness, which is a great challenge. Here, we develop a porous polycarbene-bearing membrane actuator built up from ionic complexation between a poly(ionic liquid) and trimesic acid (TA). The actuator features two concurrent structure gradients, i.e., an electrostatic complexation (EC) degree and a density distribution of a carbene-NH3 adduct (CNA) along the membrane cross-section. The membrane actuator performs the highest sensitivity among the state-of-the-art soft proton actuators toward acetic acid at 10−6 mol L−1 (M) level in aqueous media. Through competing actuation of the two gradients, it is capable of monitoring an entire process of proton-involved chemical reactions that comprise multiple stimuli and operational steps. The present achievement constitutes a significant step toward real-life application of soft actuators in chemical sensing and reaction technology.