書誌事項
- タイトル別名
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- Development of Near-infrared Optical Materials Based on Narrowing Energy Gaps by Aza-substitution of Skeletal Carbon
抄録
<p>The new strategy for modulating the energy levels of conjugated molecules without extending the π-conjugated system is described. In the distribution of frontier molecular orbitals (FMOs) which can be depicted with quantum calculation, when one of FMOs is distributed on the skeletal carbon, each of them is defined as the isolated highest occupied molecular orbital (HOMO) or the lowest unoccupied molecular orbital (LUMO). By substituting skeletal carbon to nitrogen (aza-substitution) at the isolated FMO, we found that efficient and selective lowering of the energy level of one of FMOs is realized. In this review, we explain recent progresses on the developments of near-infrared (NIR) light-absorbing and/or emitting materials based on the selective lowering of LUMO energy levels through the aza-substitution at the isolated LUMO. Initially, the representative examples on the regulation of energy levels of FMOs are illustrated with azaphenalene derivatives. Next, aggregation-induced emission (AIE) and/or crystallization-induced emission (CIE)-active complexes with longer wavelength emission are explained. Furthermore, the series of conjugated polymers having NIR-luminescent properties were obtained. The mechanism and applications for advanced optical materials are described. We show here that aza-substitution at the isolated LUMO is a powerful strategy for controlling the energy level of conjugated systems and creating superior functional materials.</p>
収録刊行物
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- 有機合成化学協会誌
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有機合成化学協会誌 82 (3), 269-278, 2024-03-01
公益社団法人 有機合成化学協会
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詳細情報 詳細情報について
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- CRID
- 1390580848625408384
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- ISSN
- 18836526
- 00379980
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可