Organic Molecular Conductors Based on Tetramethyl-TTP: Structural and Electrical Properties Modulated by the Anion Size and Shape
作者:Takashi Shirahata、Shuhei Kohno、Keisuke Furuta、Shogo Katayama、Kento Suzuki、Tadashi Kawamoto、Takehiko Mori、Yohji Misaki
DOI:10.1021/acs.inorgchem.1c04004
日期:2022.5.23
= 101 to 102 S cm–1 on a single crystal. The anion shape and size of TMTTP conductors modulate the electrical properties. The PF6– and AsF6– salts exhibit metallic conductivity down to 10 K, while the ReO4– and AuI2– salts show metal-to-insulator (MI) transition at 126 and 11 K, respectively. Single-crystal X-ray structure analysis of (TMTTP)2X (X = PF6, AsF6, BF4, and ReO4) and (TMTTP)3AuI2 reveals
成功合成了双稠合四硫富瓦烯的四甲基衍生物 2,5-bis(4,5-dimethyl-1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene (TMTTP)。大多数由 TMTTP 组成的自由基阳离子盐在单晶上具有 σ rt = 10 1至 10 2 S cm –1的高电导率。TMTTP 导体的阴离子形状和尺寸调节电性能。PF 6 –和 AsF 6 –盐表现出低至 10 K 的金属电导率,而 ReO 4 –和 AuI 2 –盐分别在 126 和 11 K 时显示出金属到绝缘体 (MI) 的转变。(TMTTP) 2 X (X = PF 6 , AsF 6 , BF 4 , 和 ReO 4 ) 和 (TMTTP) 3 AuI 2的单晶 X 射线结构分析表明,供体堆积基序被归类为所谓的β型。(TMTTP) 2 X (X = ReO 4、BF 4、PF 6和AsF