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Preparation of C60 Charge Transfer Complexes with Organic Donor Molecules and Alkali Doping

  • A. Otsuka (a1), G. Saito (a1), S. Hirate (a1), S. Pac (a1), T. Ishida (a1), A. A. Zakhidov (a2) and K. Yakush (a2)...

Abstract

Solid charge transfer (CT) complexes of C60 with TSeC1-TTF, EDT-TTF, EOET-TTF, and TDAP (1, 3, 6, 8-tetrakis(dimethylamino)pyrene) were newly prepared. All the obtained black crystals were proved to be neutral despite of their rather strong electron donor ability. Lattice parameters of them except for EOET-TTF complex were determined together with those of HMTTeF·C60, which had been reported with different values. Rubidium doping under a mild condition was examined on the complexes of TDAP, EOET-TTF, HMTTeF, BEDT-TTF, hydroquinone and ferrocene to search for the superconductors of new crystal and electronic structures. Among them, the rubidium-doped ferrocene complex easily showed an apparent superconducting signal in SQUID magnetization measurements. The doping effect on these CT complexes is compared to that on OMTTF complex.

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8. TSeC1-TTF, tetrakis(methylseleno)-tetrathiafulvalene; EDT-, ethylenedithio-; EOET-, ethylenedioxyethylenedithio-; HM1TTeF, hexamethylenetetratellurafulvalene; BEDT-, bis(ethylenedithio)-; OMTTF, octamethylenetetrathiafulvalene; DBTTF, dibenzotetrathiafulvalene.
9. Ueda, N, Sakata, Y, and Misumi, S., Bull. Chem. Soc. Jpn., 59, 3289 (1986).10.1246/bcsj.59.3289

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Preparation of C60 Charge Transfer Complexes with Organic Donor Molecules and Alkali Doping

  • A. Otsuka (a1), G. Saito (a1), S. Hirate (a1), S. Pac (a1), T. Ishida (a1), A. A. Zakhidov (a2) and K. Yakush (a2)...

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