An Organic Metal Derived from a Selenium Analogue of Benzothienobenzothiphene
An Organic Metal Derived from a Selenium Analogue of Benzothienobenzothiphene
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一种源自苯并噻吩并噻吩的硒类似物的有机金属
DOI：
10.1002/ejic.201402221
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and T. Mori
中科院分区：
文献类型：
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作者：
T. Higashino,* T. Kadoya;S. Kumeta;K. Kurata;T. Kawamoto;and T. Mori
苯并噻吩并[3，2-B]苯并噻吩（BTBT）是一种优良的有机晶体管材料，其电荷转移盐（BTBT）2 PF 6是一种有机金属，在室温下表现出高达1500 S cm-1的电导率。在这里，我们报告了硒类似物的电荷转移盐，苯并硒并[3，2-B]苯并硒代（BSBS）。（BSBS）2 TaF 6是一种一维金属，与（BTBT）2 PF 6同构。电阻跳变温度从150 K降低到90 K，低温电阻率的增加大大减少。然而，自旋磁化率在低于50 K时显示出明显的下降，这意味着低温基态本质上是单重态。
Benzothieno[3,2‐b]benzothiophene (BTBT) is an excellent organic transistor material, and its charge‐transfer salt (BTBT)2PF6is an organic metal that exhibits conductivity as high as 1500 S cm–1at room temperature. Here, we report a charge‐transfer salt of the selenium analogue, benzoseleno[3,2‐b]benzoselenophene (BSBS). (BSBS)2TaF6is a one‐dimensional metal isostructural to (BTBT)2PF6. The resistance jump temperature is reduced from 150 to 90 K, and the increase of the low‐temperature resistivity is largely diminished. However, the spin susceptibility shows an obvious drop below 50 K, which implies that the low‐temperature ground state is essentially a singlet state.