Cathodic supply of electrons to living microbial cells via cytocompatible redox-active polymers |
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| Institution: | 1. Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;2. Department of Biotechnology, Graduate School of Engineering, Nagoya University, Furocho, Chikusa-ku, Nagoya 464-8603, Japan;3. Research Center for Solar Energy Chemistry, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan;4. Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo, Hokkaido 062-8517, Japan;5. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba-city, Ibaraki 305-0047, Japan;1. Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, USA;2. Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA |
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| Abstract: | Redox-active polymers composed of 2-methacryloyloxyethyl phosphorylcholine (MPC) and redox-active units are a new category of cytocompatible electron mediators which possess permeability of cell membranes. However, supply of electrons to living cells through the cytocompatible redox polymers has not been achieved so far due to the high redox potential of the redox polymers. Here we report that electrons were successfully supplied from a cathode into Escherichia coli cells, generating the current density of 7.8 μA cm? 2 at ? 0.40 V vs. SHE. It was also revealed that the cytocompatibility of viologen was improved simply by co-polymerization with MPC. |
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