| Budget Amount *help |
¥28,500,000 (Direct Cost: ¥28,500,000)
Fiscal Year 1985: ¥12,400,000 (Direct Cost: ¥12,400,000)
Fiscal Year 1984: ¥16,100,000 (Direct Cost: ¥16,100,000)
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| Research Abstract |
In order to synthesize new organic materials with a high electric conductivity and furthermore superconductivity, our research group had much effort to develop new types of electron donors with a different kind of skeleton from tetrathiafulvalene, and to estimate the electric properties of charge-transfer (CT) complexes formed between these new donors and familiar electron acceptors, e.g., TCNQ. <F_4> TCNQ and DDQ for these two years. The donors newly synthesized in this research are as follows: ethanediylidene-2,2'-bis(1,3-dithiole) (1), ethanediylidene-2-(1,3-dithiole)-2'-(1,3-diselenole) (2), ethanediylidene-2,2'bis(1,3-diselenole) (3), and octacarbomethoxy- (4a), unsubstituted- (4b) and tetrabenzo- (4c) derivatives of tetrakis(1,3-dithiol-2-ylidene)cyclobutane. Except for 4a, all the other donors formed the CT complexes with the above acceptors. The room temperature electric conductivities of their complexes in a compressed pellet state are in the range of 0.03-0.8 <omega^(-1)> <cm^(-1)> , and the activation energies are considerably small (0.04-0.09 eV).
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