Conjugated organic framework with three-dimensionally ordered stable structure and delocalized π clouds.
Conjugated organic framework with three-dimensionally ordered stable structure and delocalized π clouds.
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DOI：
10.1038/ncomms3736
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发表时间：
2013
影响因子：
16.6
通讯作者：
Jiang D
中科院分区：
文献类型：
--
作者：
Guo J;Xu Y;Jin S;Chen L;Kaji T;Honsho Y;Addicoat MA;Kim J;Saeki A;Ihee H;Seki S;Irle S;Hiramoto M;Gao J;Jiang D
共价有机骨架是一类结晶有机多孔材料，它可以利用π-π堆积相互作用作为多边形片材结晶的驱动力，形成层状骨架和有序孔。然而，典型的例子化学不稳定并且缺乏片内π共轭，从而极大地限制了它们的应用。在这里，我们报告了一种化学稳定的电子共轭有机框架，具有拓扑设计的线框架和开放纳米通道，其中π共轭跨越二维片。我们的框架允许共轭链在所有三个维度上固有的周期性排序，并表现出惊人的特性组合：化学稳定性、扩展的π离域、承载客体分子的能力和空穴迁移率。我们表明，π-共轭有机框架可用于高开关比光电开关和光伏电池。因此，该策略可能是实现基于二维扩展 π 系统创新的有序半导体多孔材料的一步。 共价有机框架可以利用π堆积相互作用形成有序的层状框架。在这里，作者报告了一种具有定制 π 相互作用的有序框架，导致三个维度的周期性排序，从而增强稳定性和电子特性。
Covalent organic frameworks are a class of crystalline organic porous materials that can utilize π–π-stacking interactions as a driving force for the crystallization of polygonal sheets to form layered frameworks and ordered pores. However, typical examples are chemically unstable and lack intrasheet π-conjugation, thereby significantly limiting their applications. Here we report a chemically stable, electronically conjugated organic framework with topologically designed wire frameworks and open nanochannels, in which the π conjugation-spans the two-dimensional sheets. Our framework permits inborn periodic ordering of conjugated chains in all three dimensions and exhibits a striking combination of properties: chemical stability, extended π-delocalization, ability to host guest molecules and hole mobility. We show that the π-conjugated organic framework is useful for high on-off ratio photoswitches and photovoltaic cells. Therefore, this strategy may constitute a step towards realizing ordered semiconducting porous materials for innovations based on two-dimensionally extended π systems. Covalent organic frameworks can utilize π-stacking interactions for the formation of ordered, layered frameworks. Here, the authors report an ordered framework with tailored π-interactions resulting in periodic ordering in three dimensions, which leads to enhanced stability and electronic properties.
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影响因子：
16.6
作者：
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通讯作者：
Jiang, Donglin
影响因子：
16.6
作者：
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影响因子：
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通讯作者：
Jiang, Donglin
影响因子：
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作者：
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通讯作者：
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