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Published on: June 10, 2021
Indeno[1,2,3,4-pqra]Perylene: A Medium-Sized Aromatic Hydrocarbon Exhibiting Full-Range Visible-Light Absorption
Masaki Kato1, Norihito Fukui1,2, Hiroshi Shinokubo1
1Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
Researchers synthesized indenoperylene, a novel aromatic hydrocarbon. This stable compound absorbs visible light and shows potential for near-infrared-responsive and redox-active materials.
Area of Science:
- Organic Chemistry
- Materials Science
- Photophysics
Background:
- Indenoperylene is a medium-sized polycyclic aromatic hydrocarbon (PAH) isomeric to coronene.
- PAHs are crucial in organic electronics, but their properties are often limited by stability and absorption spectra.
- Developing new PAHs with tailored electronic properties is essential for advanced material applications.
Purpose of the Study:
- To report the synthesis and properties of a novel PAH, indenoperylene.
- To explore indenoperylene's potential for near-infrared-responsive and redox-active materials.
- To investigate the structure-property relationships of indenoperylene.
Main Methods:
- Synthesis of indenoperylene via a two-fold C-H arylation route.
- Characterization of indenoperylene's optical and electronic properties.
- Regioselective bromination for post-functionalization and property modulation.
Main Results:
- Successful synthesis of unsubstituted and arylated indenoperylene derivatives on a gram scale.
- Indenoperylene (C24H12) exhibits broad visible light absorption due to a small HOMO-LUMO gap.
- The compound demonstrates high stability and unique electronic structure from fused benzoaceanthrylene and perylene subunits.
Conclusions:
- Indenoperylene is a stable PAH with broad visible absorption, making it a promising material scaffold.
- Its electronic properties can be tuned via regioselective bromination.
- Indenoperylene is a viable candidate for developing near-infrared-responsive and redox-active materials.
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