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Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Linear and star-shaped pyrazine-containing acene dicarboximides with high electron-affinity
Jinjun Shao1, Jingjing Chang, Chunyan Chi
1Department of Chemistry, National University of Singapore, Singapore.
Organic & Biomolecular Chemistry
|August 1, 2012
Summary
New pyrazine-containing acene molecules with high electron affinity were synthesized. These materials exhibit liquid crystalline properties, making them suitable for organic optoelectronic devices.
Area of Science:
- Organic Chemistry
- Materials Science
- Organic Electronics
Background:
- Acene molecules are crucial in organic electronics.
- Electron-deficient moieties enhance electron transport properties.
- Dicarboximide groups are effective electron-withdrawing substituents.
Purpose of the Study:
- Synthesize novel pyrazine-containing acene molecules.
- Investigate the impact of pyrazine and dicarboximide groups on electron affinity.
- Evaluate their potential as electron transporting materials in organic optoelectronics.
Main Methods:
- Condensation reactions between ortho-diamine and dione precursors.
- Characterization of synthesized linear and star-shaped molecules (1a-b, 2a-b, 3).
- Measurement of electron affinity and space-charge limited current mobilities.
Main Results:
- Successful synthesis of pyrazine-containing acene molecules with dicarboximide substituents.
- Achieved high electron affinity, up to 4.01 eV.
- Observed thermal liquid crystalline behavior in some synthesized molecules.
Conclusions:
- The synthesized molecules possess high electron affinity due to pyrazine and dicarboximide groups.
- Their liquid crystalline properties are advantageous for device applications.
- These compounds are promising candidates for electron transporting layers in organic optoelectronic devices.
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