電解法による金属C_<60>ポリマーの合成

概要

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We tried to synthesize a new class of MC60 compounds with M=Rb, Sr and Y by an electrolysis process from solution. Two kinds of solution, 1.5mmol/l-C60 Toluene and 0.1mol/l-M(ClO4)x (x=1, M=Rb; x=2, M=Sr; x=3, M=Y) N, N-Dimethylformamide, were filled in the cathode cell and the anode cell, respectively. An ion exchange membrane separated the solution. Electrochemical properties were measured for the electrolyte solution. A black film was deposited on a silver cathode plate after the electrolysis. Raman spectra revealed that C60 molecules existed and were polymerized in the films. Characteristic shape of particles were observed in the obtained film. The coexistence of both C60 and metal was confirmed in the particles by an energy dispersive x-ray spectrometer. The film was crystallized after a post annealing at 160°C in a vacuum. The film slowly cooled after the annealing had a polymeric body-centered orthorhombic M1C60 phase, while the rapidly cooled film revealed a face centered cubic phase. The polymeric Sr1C60 and YIC60 were new materials obtained in this work, though the polymeric Rb1C60 has been well known.
社団法人電気学会の論文
1998-07-01