Solvent-free mechanochemical synthesis of organic proton conducting salts incorporating imidazole and dicarboxylic acids
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Date
2023-05
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Solventless mechanochemical synthesis by manual grinding was applied to grow organic proton conducting salts, imidazole-succinic acid (C3H4N2-HOOC(CH2)2COOH) and imidazole-glutaric acid (C3H4N2-HOOC(CH2)3COOH). This synthesis method induces crystallization and provides the phase-pure compounds. The compounds exhibit different electric conducting behavior and activation energies Ea compared with the reported single crystals obtained from the solution method. The difference in conducting property can be related to intrinsic defects and structural disorder introduced by mechanochemical grinding, indicating that the mechanochemical method bears strong capability for tuning conductivities. Moreover, complete deuteration of the organic salts is achieved by the method. The mechanochemical synthesis of organic salts also holds high potential for the actual industrialized large-scale production. © 2023 Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Description
Keywords
Dicarboxylic acids, Monocrystals, Activation energy, Grinding, Salts, Deuteration, Solvents, Diffraction, Synthesis
Citation
Zhou, Y., Koedtruad, A., Tan, Z., Zhang, D., Bao, L., Yue, Y., Wu, J., Xu, J., Xia, Y., Yin, W., Avdeev, M., Kan, W. H., Kamiyama, T., & Miao, P. (2023). Solvent-free mechanochemical synthesis of organic proton conducting salts incorporating imidazole and dicarboxylic acids. Chinese Journal of Structural Chemistry, 42(5), 100059. doi:10.1016/j.cjsc.2023.100059