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Article Navigation >  Green Energy&Environment  > 2019  >  4(2): 116-120
Hisashi Shimakoshi, Noriyuki Houfuku, Li Chen, Yoshio Hisaeda. Redox active ionic liquid as efficient mediator and solvent for visible light-driven B12 catalytic reactions. Green Energy&Environment, 2019, 4(2): 116-120. doi: 10.1016/j.gee.2019.03.001
Citation: Hisashi Shimakoshi, Noriyuki Houfuku, Li Chen, Yoshio Hisaeda. Redox active ionic liquid as efficient mediator and solvent for visible light-driven B12 catalytic reactions. Green Energy&Environment, 2019, 4(2): 116-120. doi: 10.1016/j.gee.2019.03.001
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Redox active ionic liquid as efficient mediator and solvent for visible light-driven B12 catalytic reactions

doi: 10.1016/j.gee.2019.03.001

  • Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan

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    Abstract
  • The redox active ionic liquid, 1-ethyl-4-(methoxycarbonyl)pyridinium bis(trifluoromethanesulfonyl)amide ( RIL ), was synthesized from its iodide form by an anion exchange reaction of Li(NTf2) with viscos liquid (η = 122 cP at 25 °C) and characterized by NMR, IR, and elemental analysis. The compound showed reversible redox couples at −0.65 V and −1.48 V vs. Ag/AgCl and worked as an electron mediator in the B12 complex/[Ru(bpy)3]Cl2 photosensitizer catalytic system under visible light irradiation. The catalytic efficiency in the RIL was higher than those in DMF, MeOH, and the redox inactive ionic liquid, 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)amide.

     

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