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Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
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Anthracene-Pentacene Dyads: Synthesis and OFET Characterization
Miriam Hauschild1,2, Lan Chen3, Sebastian H Etschel1,4
1Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany.
Chempluschem
|May 14, 2020
Summary
Researchers synthesized novel anthracene-pentacene molecules for organic electronics. Thin-film formation, not just molecular structure, is crucial for achieving good semiconducting properties in organic field-effect transistors (OFETs).
Area of Science:
- Organic electronics
- Materials science
- Supramolecular chemistry
Background:
- Pentacene and anthracene are key components in organic semiconductor research.
- Designing functionalized molecular dyads is essential for tuning electronic properties.
- Understanding structure-property relationships is critical for developing new organic materials.
Purpose of the Study:
- To synthesize and characterize novel unsymmetrical anthracene-pentacene dyads.
- To investigate the electronic and solid-state properties of these molecular dyads.
- To evaluate the performance of these dyads as semiconductors in organic field-effect transistors (OFETs).
Main Methods:
- Synthesis of functionalized anthracene-pentacene dyads.
- Characterization using UV-vis spectroscopy and cyclic voltammetry.
- X-ray crystallographic analysis for solid-state structure determination.
- Fabrication and testing of organic field-effect transistors (OFETs).
Main Results:
- Successful synthesis of anthracene-pentacene dyads with varying substituents.
- X-ray crystallography revealed similar packing arrangements for several derivatives.
- One derivative (1b) exhibited ambipolar behavior in OFETs with an AlOx gate dielectric.
- Poor performance was observed for all derivatives using a p-doped silicon substrate.
Conclusions:
- Thin-film morphology and formation play a more significant role than molecular structure in determining OFET performance.
- The choice of gate dielectric is critical for achieving optimal device characteristics.
- Further research should focus on controlling thin-film formation for enhanced organic semiconductor devices.
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