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Single-Carbon-Fiber-Powered Microsensor for In Vivo Neurochemical Sensing with High Neuronal Compatibility |
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| Authors: | Prof Ping Yu Huan Wei Peipei Zhong Yifei Xue Dr Fei Wu Dr Yang Liu Prof Junjie Fei Prof Lanqun Mao |
| Institution: | 1. Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190 China
University of Chinese Academy of Sciences, Beijing, 100049 China These authors contributed equally to this work.;2. Key Laboratory of Environmentally Friendly Chemistry and Applications of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan, 411105 China;3. Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190 China University of Chinese Academy of Sciences, Beijing, 100049 China;4. Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190 China |
| Abstract: | The development of new principles and techniques with high neuronal compatibility for quantitatively monitoring the dynamics of neurochemicals is essential for deciphering brain chemistry and function but remains a great challenge. We herein report a neuron-compatible method for in vivo neurochemical sensing by powering a single carbon fiber through spontaneous bipolar electrochemistry as a new sensing platform. By using ascorbic acid as a model target to prove the concept, we found that the single-carbon-fiber-powered microsensor exhibited a good response, high stability and, more importantly, excellent neuronal compatibility. The microsensor was also highly compatible with electrophysiological recording, thus enabling the synchronous recording of both chemical and electrical signals. The sensing principle could be developed for in vivo monitoring of various neurochemicals in the future by rationally designing and tuning the electrochemical reactions at the two poles of the carbon fiber. |
| Keywords: | bipolar electrochemistry carbon fibers in vivo analysis sensors synchronous measurements |