The thermal stability of metal cation-TCNQ anion radical salts.
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概要
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To study the thermal stability of several metal cation–TCNQ salts (mainly alkali metal salts), the variation in the electrical resistivity and the characteristics of the chemical degradations by heating were measured. Most metal–TNCQ salts do not melt and are not sublimated, but have decomposition points at about 320 °C. Na(TCNQ) has a stable resistivity, even after heating for 500 hours at 200 °C, and is the most stable among the metal–TCNQ salts tested. Metal–TCNQ salts are gradually damaged from the surfaces of the crystalline powders by heating, and the TCNQ, molecule is oxidized, thus losing CN groups. The crystallization process of the TCNQ salts has a great influence upon their thermal stabilities. In the complex salt Cs<SUB>2</SUB>(TCNQ)<SUB>3</SUB>, the application of d.c. voltage gives rise to the polarization current at a temperature near 200 °C, and the TCNQ molecules tend to migrate in the electric field.
- 公益社団法人 日本化学会の論文
著者
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Kishimoto Yoshio
Materials Research Laboratory, Matsushita Electric Industrial Co., Ltd.
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Shimotsuma Wataru
Materials Research Laboratory, Matsushita Electric Industrial Co., Ltd.