A novel charge-transfer complex of TTF having uracil moiety with TCNQ

被引:9
|
作者
Maki, S
Morita, Y
Kitagawa, H
Mitani, T
Nakasuji, K
机构
[1] Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 5600043, Japan
[2] Japan Adv Inst Sci & Technol, Taisunokuchi, Ishikawa 9231292, Japan
[3] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan
关键词
coupling reactions; infrared and Raman spectroscopy; magnetic measurements;
D O I
10.1016/S0379-6779(00)00690-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A novel charge-transfer complex of tetrathiafulvalene (TTF) having uracil moiety (TTFU), TTFU-TCNQ, was prepared by a cross coupling reaction of Bu3Sn=TTF and 5-iodouracil using Pd(0) catalyst. The TTFU=TCNQ complex was obtained by the mixing of equal molar quantities of DMF solution of TTFU and TCNQ. It exhibits a high electrical conductivity as the compressed pellet (rho (rt) = 9 Omega cm at room temperature) and shows semiconducting behavior (E-a = 180 meV). From the magnetic susceptibility measurement. TTFU-TCNQ was found to have spin degrees of freedom, which suggests that it is not a band-type insulator but a Mott-Hubbard insulator.
引用
收藏
页码:741 / 742
页数:2
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