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首页> 外文期刊>Organic Electronics >Naphthalene flanked diketopyrrolopyrrole: A new DPP family member and its comparative optoelectronic properties with thiophene- and furan-flanked DPP counterparts
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Naphthalene flanked diketopyrrolopyrrole: A new DPP family member and its comparative optoelectronic properties with thiophene- and furan-flanked DPP counterparts

机译：萘侧二酮吡咯并吡咯：一种新的DPP家族成员及其与噻吩和呋喃侧接的DPP对应物的比较光电性能

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摘要

Diketopyrrolopyrrole (DPP) has been one of the most promising building blocks for constructing organic semiconducting materials used in organic field-effect transistors (OFET). As we have known, extended p-conjugated structure can facilitate intermolecular orbital coupling which determines the magnitude of the charge transfer integral and thus the charge transport in devices. What is more, better intramolecular charge transport and intermolecular charge hopping depend on more superior morphology of the conjugated materials in thin film that is influenced by flexible substitutions. Based on the above principles, it is worthy designing and synthesizing fused ring flanked DPP monomers with alkyl chains to exploit their potential use in OFET. In this work, we first synthesized and characterized a new DPP derivative, naphthalene flanked DPP with butyl-octyl side chain (BO-DPPN). When comparing with its thiophene-and furan-flanked DPP analogues using the same common alkyl chain, BO-DPPN appears as most suitable for OFET applications. For example, DSC analysis demonstrates its high degree of crystallinity, UV-Vis spectra show a strong aggregation in solid state, XRD pattern indicates its tight and long-range ordered lamellar packing. As expected, the OFET devices function well when using BO-DPPN directly as active semiconductor and an impressive hole mobility of 0.0126 cm(2) V-1 s(-1) was observed with a bottom-contact/top-gate architecture using a solution processable approach indicating its promising potential for use in organic electronics.
机译：二酮吡咯并吡咯（DPP）已成为构建用于有机场效应晶体管（OFET）的有机半导体材料的最有希望的组成部分之一。众所周知，扩展的p共轭结构可以促进分子间的轨道耦合，这决定了电荷转移积分的大小，从而决定了器件中的电荷转移。而且，更好的分子内电荷传输和分子间电荷跳跃取决于薄膜中共轭材料的更优异的形态，该形态受柔性取代的影响。基于上述原理，值得设计和合成具有烷基链的稠环侧翼DPP单体，以开发其在OFET中的潜在用途。在这项工作中，我们首先合成并表征了一种新的DPP衍生物，即带有丁基辛基侧链（BO-DPPN）的萘侧DPP。当使用相同的常见烷基链与其噻吩和呋喃侧翼的DPP类似物进行比较时，BO-DPPN似乎最适合OFET应用。例如，DSC分析表明它具有很高的结晶度，UV-Vis光谱显示出很强的固态聚集，XRD图谱表明其紧密和长程有序的层状堆积。如预期的那样，当将BO-DPPN直接用作有源半导体时，OFET器件功能良好，并且使用底部接触/顶部栅结构使用ADF时，观察到令人印象深刻的0.0126 cm（2）V-1 s（-1）的空穴迁移率。解决方案可处理方法，表明其在有机电子领域的应用潜力很大。

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