Current-Induced Low-Resistance State and Its Crystal Structure of a TTF-Based Dimeric Donor Salt

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• 作者：Michio M. Matsushita and Tadashi Sugawara
• 刊名：Journal of the American Chemical Society
• 出版年：2005
• 出版时间：September 14, 2005
• 年：2005
• 卷：127
• 期：36
• 页码：12450 - 12451
• 全文大小：110K
• 年卷期：v.127,no.36(September 14, 2005)
• ISSN：1520-5126

文摘

A bromide salt of a TTF-based cross-cyclophane-type donor displayed characteristic nonlinear voltage-biased conductivity. As the applied voltage was increased, the passing current was enhanced abruptly at 54 kV·cm^-1, exhibiting hysteretic behavior. X-ray analysis of the current-induced low-resistance state of the crystal, which has P4₁ symmetry, revealed that the degree of charge disproportionation of the dimeric donor in the crystal substantially decreased during the current application. This result is interpreted as indicating that the class I mixed-valence state of the cation-radical salt of the dimeric donor was converted into the class III state by the application of the large current.