通过萘熔剂法生长环五稠合多环芳烃的单晶：二维双极性电荷传输特性和近红外吸收,ACS Applied Electronic Materials

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通过萘熔剂法生长环五稠合多环芳烃的单晶：二维双极性电荷传输特性和近红外吸收
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2023-10-26 , DOI: 10.1021/acsaelm.3c01148
Hirohiko Tanoguchi ₁ , Takuma Yuki ₁ , Seiya Yokokura _{1,

2} , Takashi Yanase ₃ , Mingoo Jin ₄ , Hajime Ito _{2,

4} , Taro Nagahama _{1,

2} , Toshihiro Shimada _{1,

2}

Affiliation

与简单的p型和n型有机场效应晶体管相比，双极晶体管很难实现高性能，因为晶体中的HOMO-HOMO和LUMO-LUMO相互作用必须是大的和多维的。我们通过实验和理论研究了三种具有窄HOMO-LUMO能隙的环五稠合多环芳烃分子，发现其中一种是二维双极性材料。尽管由于这些分子在常见有机溶剂中的溶解度较低，其晶体结构尚未被报道，但我们已经使用萘助熔剂法成功揭示了它们的晶体结构。1,2,6,7-四苯基二环五[cd,jk]芘晶体具有砖状结构，有望用于二维电荷传输。使用获得的分子排列进行的理论计算表明，HOMO-HOMO 和 LUMO-LUMO 都存在二维相互作用。实验研究证实了单晶 FET 的双极运行。此外，尽管该材料具有单组分性质，但仍观察到由于分子间电荷转移相互作用而产生的近红外吸收，这表明其在光电转换器件中的应用潜力。

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Single Crystal Growth of Cyclopenta-Fused Polycyclic Aromatic Hydrocarbon by the Naphthalene Flux Method: 2D Ambipolar Charge Transport Properties and NIR Absorption

Compared to simple p- and n-type organic field-effect transistors, it is very difficult to achieve high performance in ambipolar transistors because both HOMO–HOMO and LUMO–LUMO interactions in the crystal must be large and multidimensional. We have experimentally and theoretically investigated three types of cyclopenta-fused polycyclic aromatic hydrocarbon molecules with narrow HOMO–LUMO gaps and found that one of them is a two-dimensional ambipolar material. Although the crystal structures of these molecules have not been reported due to their low solubility in common organic solvents, we have succeeded in revealing their crystal structures using the naphthalene flux method. 1,2,6,7-Tetraphenyldicyclopenta[cd,jk]pyrene crystals have a brick-work structure, which is expected to be promising for two-dimensional charge transport. Theoretical calculations using the obtained molecular arrangement suggested that there are two-dimensional interactions for both HOMO–HOMO and LUMO–LUMO. Experimental investigation confirmed ambipolar operation in a single-crystal FET. In addition, near-infrared absorption due to intermolecular charge-transfer interactions was observed despite the single-component nature of the material, suggesting its potential for use in photoelectric conversion devices.

更新日期：2023-10-26

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