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BN-Embedded Tetrabenzopentacene: A Pentacene Derivative with Improved Stability
Fang-Dong Zhuang1, Ze-Hao Sun1, Ze-Fan Yao1
1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
Angewandte Chemie (International Ed. in English)
|May 25, 2019
Summary
Researchers developed a stable BN-embedded tetrabenzopentacene (BNTBP) for electronics. This novel material offers enhanced stability against environmental factors and good performance in field-effect transistors (FETs).
Area of Science:
- Organic electronics
- Materials science
- Supramolecular chemistry
Background:
- Acene derivatives are crucial for electronic applications but suffer from instability.
- Achieving high stability in acenes without significant structural modification remains a challenge.
Purpose of the Study:
- To synthesize a highly stable acene derivative with minimal structural changes.
- To investigate the electronic properties and stability of BN-embedded acenes for potential applications.
Main Methods:
- Incorporation of isoelectronic Boron-Nitrogen (BN) units into the acene core to create BN-embedded tetrabenzopentacene (BNTBP).
- Characterization of BNTBP's structural, electronic, and stability properties.
- Fabrication and testing of BNTBP in single-crystal microribbon field-effect transistors (FETs).
Main Results:
- BNTBP exhibits a planar structure and remarkable stability against air, moisture, light, and heat.
- BN embedment effectively lowers the highest occupied molecular orbital (HOMO) energy level and alters orbital distribution, enhancing stability against oxygen and sunlight.
- BNTBP demonstrated good performance in FET devices, indicating efficient charge transport.
Conclusions:
- BN incorporation is a viable strategy for creating stable, large-sized acene derivatives.
- BNTBP presents a promising material for advanced electronic applications due to its high stability and good charge carrier mobility.
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