Redox active ionic liquid as efficient mediator and solvent for visible light-driven B 12 catalytic reactions

Hisashi Shimakoshi, Noriyuki Houfuku, Li Chen, Yoshio Hisaeda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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(NTf 2 ) 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 B 12 complex/[Ru(bpy) 3 ]Cl 2 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.

Original languageEnglish
Pages (from-to)116-120
Number of pages5
JournalGreen Energy and Environment
Volume4
Issue number2
DOIs
Publication statusPublished - Apr 2019

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

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