Saddle-Shaped Building Blocks: A New Concept for Designing Fully Conjugated 3D Organic Semiconducting Materials,Chemistry - A European Journal

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Saddle-Shaped Building Blocks: A New Concept for Designing Fully Conjugated 3D Organic Semiconducting Materials
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2021-05-27 , DOI: 10.1002/chem.202101326
Yaqin Wang ₁ , Yuting Zhang ₁ , Shitao Wang ₁ , Dapeng Cao ₁

Affiliation

Currently, most organic semiconducting materials (OSMs) are π-conjugated structures in one or two dimension (2D), where the lack of layer-layer π-conjugation connection greatly blocks their electron delocalization and transport. The 3D fully conjugated materials could solve this issue because they can provide efficient charge-transport pathways throughout the whole 3D skeleton, in which the suitable 3D building block is the key to the development of fully conjugated 3D OSMs. Cyclooctatetraene (COT) and its derivatives are good candidates due to their π-conjugation with 3D saddle-shaped architecture. In this Concept, we discuss the key features of saddle-shaped COT-based derivatives and their synthetic strategy, then we present the current development of using the COT derivatives as building blocks to construct the 3D fully conjugated organic small compound- and polymer-based OSMs. The properties and perspectives of these OSMs in photovoltaics, electro-catalysis and electrical conductivities are also discussed. These recent advances in the developing 3D fully conjugated materials could potentially open up a new frontier in the design of OSMs.

中文翻译：

鞍形积木：设计完全共轭 3D 有机半导体材料的新概念

目前，大多数有机半导体材料 (OSM) 是一维或二维 (2D) 的 π 共轭结构，其中层与层 π 共轭连接的缺乏极大地阻碍了它们的电子离域和传输。3D 完全共轭材料可以解决这个问题，因为它们可以在整个 3D 骨架中提供有效的电荷传输路径，其中合适的 3D 构建块是开发完全共轭 3D OSM 的关键。环辛四烯 (COT) 及其衍生物是很好的候选材料，因为它们与 3D 鞍形结构的 π 共轭。在这个概念中，我们讨论了基于马鞍形 COT 的衍生品的主要特征及其合成策略，然后我们介绍了使用 COT 衍生物作为构建块来构建 3D 完全共轭有机小化合物和基于聚合物的 OSM 的当前发展。还讨论了这些 OSM 在光伏、电催化和电导率方面的特性和前景。开发 3D 完全共轭材料的这些最新进展可能会开辟 OSM 设计的新领域。

更新日期：2021-05-27

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