Fully Conjugated Tetraoxa[8]circulene-Based Porous Semiconducting Polymers
Patrick W Fritz1, Tianyang Chen2, Timur Ashirov1
1Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland.
Angewandte Chemie (International Ed. in English)
|February 16, 2022
Summary
Researchers synthesized the first polymeric tetraoxa[8]circulenes (pTOCs), novel porous semiconductors with tunable, light-switchable electronic properties. This breakthrough opens new avenues for advanced semiconductor materials.
Area of Science:
- Materials Science
- Organic Chemistry
- Semiconductor Physics
Background:
- Tetraoxa[8]circulenes (TOCs) are hetero[8]circulenes with a unique cyclooctatetraene core.
- Their electronic properties are influenced by a mixed aromatic/antiaromatic motif.
- Polymeric TOCs (pTOCs) were computationally predicted as low-band-gap semiconductors but lacked synthetic examples.
Purpose of the Study:
- To report the first successful synthesis of polymeric tetraoxa[8]circulenes (pTOCs).
- To characterize the structure and properties of these novel porous semiconductors.
- To explore their potential applications based on their electronic characteristics.
Main Methods:
- Ionothermal synthesis conditions were employed.
- Intermolecular cyclization of 1,4,5,8-anthracene tetrone was utilized.
- Characterization included surface area measurements (up to 1656 m²/g).
Main Results:
- The first synthetic example of polymeric tetraoxa[8]circulenes (pTOCs) was achieved.
- The synthesized pTOCs are porous materials with high surface areas.
- These pTOCs exhibit light-switchable and tunable semiconducting properties.
Conclusions:
- This study presents a novel class of porous semiconductors, pTOCs.
- The synthesis overcomes previous limitations, enabling experimental investigation.
- The tunable and light-switchable semiconducting behavior suggests potential for advanced electronic applications.
Keywords:
DopingPorous Organic PolymersPost-Synthetic ModificationSemiconductorsTetraoxa[8]CirculenesMore Related Videos
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