The intercalation of tris-bipyridyl metal complexes (M(bpy)32+, M=Ru, Ni, and Co) into the interlayer region of vanadium pentoxide gel (V2O5·nH2O) was confirmed for the first time. The intercalation of the guest species was conducted by the reaction of the complexes with undried V2O5 gel. The saturated amount of adsorbed M(bpy)32+ was less than the ion exchange capacity of the V2O5 gel because of bulkiness of M(bpy)32+. The transition temperature to orthorhombic V2O5 was higher than that of original V2O5 gel, indicating the stabilization of the layered structure by the intercalation.
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