Hydrogen-Bonded Organic Semiconductors with Long Charge Carrier Lifetimes
Hydrogen-Bonded Organic Semiconductors with Long Charge Carrier Lifetimes
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DOI：
10.1021/acs.jpcc.2c03105
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发表时间：
2022-06-23
影响因子：
3.7
通讯作者：
Ruiz-Carretero，Amparo
中科院分区：
文献类型：
--
作者：
Avila-Rovelo，Nelson Ricardo;Martinez，Gabriel;Ruiz-Carretero，Amparo
氢键是非共价相互作用，能够改善自组装半导体的电子性能。然而，控制影响氢键形成的参数是必要的，以实现具有增强性能的分层结构。在这项工作中，我们探索了两种含有不同拓扑结构（C-或n-中心）酰胺的含噻吩的氢键二酮吡咯（DPP）衍生物，并将它们与没有氢键的对照类似物进行了比较。我们展示了两种含酰胺的DPP衍生物的光电和自组装性能的差异，以及它们的载流子寿命。我们证明了与没有氢键的对照分子相比，氢键衍生物具有优越的性能，并表明与文献中报道的其他含酰胺半导体相比，我们的分子设计策略导致了具有特别长的载流子寿命的超分子结构。
Hydrogen bonds are noncovalent interactions able to improve the electronic properties of self-assembled semiconductors. Nevertheless, it is necessary to control the parameters influencing the formation of hydrogen bonds to achieve hierarchical structures with enhanced properties. In this work, we explore two hydrogen-bonded thiophene-capped diketopyrrolopyrrole (DPP) derivatives containing amides with different topology (C- or N-centered) and compare them to a control analogue without hydrogen bonds. We demonstrate the differences in the optoelectronic and self-assembly properties of the two amide-containing DPP derivatives, as well as in their charge carrier lifetimes. We prove the superior properties of the hydrogen-bonded derivatives in comparison to the control molecule without hydrogen bonds, and show that our molecular design strategy results in supramolecular structures with particularly long charge carrier lifetimes compared to other amide-containing semiconductors reported in the literature.