Redox active ionic liquid as efficient mediator and solvent for visible light-driven B12 c

Redox active ionic liquid as efficient mediator and

solvent for visible light-driven B12 catalytic

reactions

Hisashi Shimakoshi[1];Noriyuki Houfuku[1];Li Chen[1];Yoshio Hisaeda[1];

【期刊名称】《绿色能源与环境：英文版》 【年(卷),期】2024(004)002 【

摘

要

】

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℃) 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. 【总页数】5页(P.116-120)

【关键词】Ionic liquid;Photosensitizer;Redox active;Visible light;Vitamin B12

【作者】Hisashi Shimakoshi[1];Noriyuki Houfuku[1];Li Chen[1];Yoshio Hisaeda[1];

【作者单位】[1]Department of Chemistry and Biochemistry,Graduate