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首页> 外文期刊>Chemistry: A European journal >Benzimidazole Derivatives: Synthesis, Physical Properties, and n-Type Semiconducting Properties
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Benzimidazole Derivatives: Synthesis, Physical Properties, and n-Type Semiconducting Properties

机译：苯并咪唑衍生物：合成，物理性质和n型半导体性质

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摘要

A series of new benzimidazole derivatives were synthesized by the solid-state condensation and direct sublimation (SSC-DS) method and their physical properties were investigated. The reaction yields and product stability were significantly affected by the identity of the diamine and anhydride substituents. On the other hand, the substituents of the benzimidazole ring allowed fine tuning of the emission maxima, fluorescence quantum yields, and redox potentials. The HOMO–LUMO levels were estimated by cyclic voltammetry in film on indium tin oxide (ITO) and compared with values obtained by other methods. The described benzimidazoles showed high crystallinity, which is attributed to a high planarity and interactions between carbon and heteroatoms. These compounds showed n-type semiconducting behavior in organic field-effect transistors (OFETs). Optimized devices for fluorinated NTCBI (naphthalene tetracarboxylic bisbenzimidazole) showed respectable electron mobilities of ~10~(-2) cm~2V~(-1) s~(-1).
机译：通过固态缩合和直接升华（SSC-DS）法合成了一系列新的苯并咪唑衍生物，并对其物理性质进行了研究。二胺和酸酐取代基的身份显着影响反应产率和产物稳定性。另一方面，苯并咪唑环的取代基可精细调节发射最大值，荧光量子产率和氧化还原电势。通过循环伏安法在氧化铟锡（ITO）上的膜中估算HOMO-LUMO的水平，并将其与其他方法获得的值进行比较。所描述的苯并咪唑显示出高结晶度，这归因于高平面度以及碳与杂原子之间的相互作用。这些化合物在有机场效应晶体管（OFET）中显示出n型半导体行为。氟化NTCBI（萘四甲酸双苯并咪唑）的优化器件显示出约10〜（-2）cm〜2V〜（-1）s〜（-1）的可观电子迁移率。

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