Abstract
This focus review describes several methods for aligning π-electronic systems to achieve various functionalities in both solution and the solid phase. Cyclic oligomers, acting as tethering units, can facilitate precise design of the nanoarchitecture of π-electronic systems. This approach produces three-dimensionally aligned structures of π-electronic systems in diluted solutions, where the intermolecular interactions are partially excluded. In the solid state, charged π-electronic systems exhibit nanoarchitectures based on electrostatic interactions, including the repulsive and attractive forces generated between the identically charged and differently charged species, respectively. These methods for controlling the arrangements of π-electronic systems can produce fascinating molecular systems.
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Acknowledgements
The author expresses gratitude to all his colleagues for their valuable contributions to this focus review. The author is deeply indebted to Prof. Shuji Okada (Yamagata University), Prof. Hiromitsu Maeda (Ritsumeikan University), and Prof. Koji Takagi (Nagoya Institute of Technology) for continuous encouragement and constructive discussions. This research was partly supported by the Grants-in-Aid for Scientific Research on Innovation Areas (“Photosynergetics” Area 2606, No. JP26107007) from the MEXT.
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Yamakado, R. Well-defined arrangement of π-electronic systems based on precise molecular design. Polym J 52, 701–708 (2020). https://doi.org/10.1038/s41428-020-0338-5
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DOI: https://doi.org/10.1038/s41428-020-0338-5