SOLID PHASE PHOTOREDUCTION OF METHYLVIOLOGEN ON CELLULOSE SENSITIZED BY TRIS(2,2′‐BIPYRIDYL)RUTHENIUM COMPLEX
作者： Masao Kaneko , Akira Yamada
DOI: 10.1111/J.1751-1097.1981.TB05494.X
关键词:
摘要: –Methylviologen (MV2+) adsorbed on cellulose could be reduced photochemically in the solid phase sensitized by tris(2,2′-bipyridyl)ruthenium(II) complex, [Ru(II)(bpy)3], using disodium ethylene-diaminetetraacetic acid (Na2EDTA) as a reducing agent. Formation of cation radical (MV +.) was confirmed visible and EPR spectra. The MV+. formed remarkably stable against air oxidation rapidly accumulated even irradiation under air. Water greatly retarded photoreaction. Action spectrum showed that excitation Ru(II)(byp)3 is responsible for photochemical reaction. quenching emission from Ru(II)(bpy)*3 MV2+. indicated primary reaction occurs between main path reduction MV2+ Ru(II)(bpy)3, giving Ru(III)(bpy)3, followed Ru(III)(bpy)3 to Ru(II)(bpy)3 with Na2EDTA, which turn oxidized give carbon dioxide.
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