Donor–anion interactions in quarter-filled low-dimensional organic conductors,Materials Horizons

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Donor–anion interactions in quarter-filled low-dimensional organic conductors
Materials Horizons ( IF 12.2 ) Pub Date : 2018-06-07 00:00:00 , DOI: 10.1039/c8mh00423d
Jean-Paul Pouget _{1,

2,

3,

4,

5} , Pere Alemany _{6,

7,

8,

9} , Enric Canadell _{9,

10,

11,

12}

Affiliation

Anions have often been considered to act essentially as electron donors or acceptors in molecular conductors. However there is now growing evidence that they play an essential role in directing the structural and hence electronic properties of many of these systems. After reviewing the basic interactions and different ground states occurring in molecular conductors we consider in detail how anions influence the structure of donor stacks and often guide them toward different types of transitions. Consideration of the Bechgaard and Fabre salts illustrates how anions play a crucial role in directing these salts through complex phase diagrams where different conducting and localized states are in competition. We also emphasize the important role of hydrogen bonding and conformational flexibility of donors related to BEDT-TTF and we discuss how anions have frequently a strong control of the electronic landscape of these materials. Charge ordering, metal to metal and metal to insulator transitions occurring in these salts are considered.

中文翻译：

四分之一填充低维有机导体中的供体-阴离子相互作用

通常认为阴离子在分子导体中基本上起电子给体或受体的作用。但是，现在越来越多的证据表明，它们在指导许多这些系统的结构和电子特性方面起着至关重要的作用。在回顾了分子导体中的基本相互作用和不同的基态之后，我们详细考虑了阴离子如何影响施主堆栈的结构，并经常指导它们走向不同类型的过渡。对Bechgaard和Fabre盐的研究说明了阴离子如何通过复杂的相图（在竞争中处于不同的导电状态和局部状态）引导这些盐发挥至关重要的作用。我们还强调了与BEDT-TTF相关的供体的氢键和构象柔韧性的重要作用，并讨论了阴离子如何经常强烈地控制这些材料的电子态势。考虑了在这些盐中发生的电荷有序，金属对金属和金属对绝缘体的转变。

更新日期：2018-06-07

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