Supramolecular Assemblies by Charge-Transfer Interactions between Donor and Acceptor Chromophores
Supramolecular Assemblies by Charge-Transfer Interactions between Donor and Acceptor Chromophores
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DOI：
10.1002/anie.201307756
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发表时间：
2014-02-17
影响因子：
16.6
通讯作者：
Ghosh, Suhrit
中科院分区：
文献类型：
--
作者：
Das, Anindita;Ghosh, Suhrit
我们整理了各种超分子设计，利用有机供体-受体CT络合产生非共价共组装结构，包括纤维状凝胶，胶束，囊泡，纳米管，折叠体，构象限制的大分子，和液晶相。可能是受到大自然的启发，化学家们广泛使用氢键作为一种工具，用于各种非生物构建模块的超分子组装。作为一种结构基序，CT复合物在其方向性和互补性方面可以与氢键复合物相比较。CT相互作用的其他优点包括更宽的溶剂耐受性和容易的光谱探测。然而，主要的限制是它们的低缔合常数。这篇文章显示了不同的策略已经发展多年来，以克服这一缺点，加强CT相互作用与辅助非共价力，而不妨碍交替堆叠模式。新兴的报告有前途的CT复合物在有机电子学密切相关的各种超分子设计，可以假设基于供体-受体CT相互作用。
We have collated various supramolecular designs that utilize organic donor-acceptor CT complexation to generate noncovalently co-assembled structures including fibrillar gels, micelles, vesicles, nanotubes, foldamers, conformationally restricted macromolecules, and liquid crystalline phases. Possibly inspired by nature, chemists have extensively used hydrogen bonding as a tool for supramolecular assemblies of a diverse range of abiotic building blocks. As a structural motif, CT complexes can be compared to hydrogen-bonded complexes in its directional nature and complementarities. Additional advantages of CT interactions include wider solvent tolerance and easy spectroscopic probing. Nevertheless the major limitation is their low association constant. This article shows different strategies have evolved over the years to overcome this drawback by reinforcing the CT interactions with auxiliary noncovalent forces without hampering the alternate stacking mode. Emerging reports on promising CT complexes in organic electronics are intimately related to various supramolecular designs that one can postulate based on donor-acceptor CT interactions.