Triphenylamine- and triazine-containing hydrogen bonded complexes: liquid crystalline supramolecular semiconductors,Journal of Materials Chemistry C

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Triphenylamine- and triazine-containing hydrogen bonded complexes: liquid crystalline supramolecular semiconductors
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2021-1-7 , DOI: 10.1039/d0tc05186a
Beatriz Feringán _{1,

2,

3,

4,

5} , Roberto Termine _{6,

7,

8,

9,

10} , Attilio Golemme _{6,

7,

8,

9,

10} , José M. Granadino-Roldán _{11,

12,

13,

14,

15} , Amparo Navarro _{11,

12,

13,

14,

15} , Raquel Giménez _{1,

2,

3,

4,

5} , Teresa Sierra _{1,

2,

3,

4,

5}

Affiliation

Despite the fact that triphenylamine derivatives have been widely explored as hole-transporting materials, studies on charge transport properties in the liquid crystal phase have been overlooked. Here, it is reported that triphenylamine liquid crystals can attain very high hole mobility values in a hexagonal columnar mesophase, up to μ ≈ 5 cm² V⁻¹ s⁻¹. The columnar liquid crystalline phase was obtained by a proper design of a supramolecular mesogen, and this is unprecedented for triphenylamine liquid crystals. In fact, the supramolecules were formed by hydrogen-bonded 1 : 3 complexes of a star-shaped triazine core and three triphenylamine peripheral units. The resulting hexagonal columnar mesophase acts as a successful scaffold that confines TPA units at the periphery of columns. Challenging DFT theoretical investigations into a model based on such supramolecular systems involving a large number of atoms were undertaken to explore the stability and geometry of the complexes and their electronic properties.

中文翻译：

含三苯胺和三嗪的氢键配合物：液晶超分子半导体

尽管已经广泛地研究了三苯胺衍生物作为空穴传输材料，但是对液晶相中的电荷传输性质的研究却被忽略了。在此，据报道，三苯胺液晶可以在一个六角形柱状相达到非常高的空穴迁移率值，高达μ听，说：5厘米² V ^-1小号^-1。通过适当设计超分子介晶获得柱状液晶相，这对于三苯胺液晶是前所未有的。实际上，超分子是由氢键合的星形三嗪核和三个三苯胺外围单元的1：3配合物形成的。所得的六方柱状中间相可作为成功的支架，将TPA单元限制在柱的外围。进行具有挑战性的DFT理论研究，以基于这种包含大量原子的超分子体系为基础的模型，以研究络合物的稳定性和几何形状及其电子性质。

更新日期：2021-01-15

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