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Article Dans Une Revue Chemistry - A European Journal Année : 2020

Crystallization and OFET Performance of a Hydrogen‐Bonded Quaterthiophene

Résumé

Crystalline thin films of π-conjugated molecules are relevant as the active layers in organic electronic devices. Therefore, materials with enhanced control over the supramolecular arrangement, crystallinity, and thin-film morphology are desirable. Herein, it is reported that hydrogen-bonded substituents serve as additional structure-directing elements that positively affect crystallization, thin-film morphology, and device performance of p-type organic semiconductors. It is observed that a quaterthiophene diacetamide exhibits a denser packing than that of other quaterthiophenes in the single-crystal structure and, as a result, displays enhanced intermolecular electronic interactions. This feature was preserved in crystalline thin films that exhibited a layer-by-layer morphology, with large domain sizes and high internal order. As a result, organic field-effect transistors of these polycrystalline thin films showed mobilities in the range of the best mobility values reported for single-crystalline quaterthiophenes. The use of hydrogen-bonded groups may, thus, provide an avenue for organic semiconducting materials with improved morphology and performance.
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Dates et versions

hal-02888863 , version 1 (10-12-2021)

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Jan Gebers, Bilal Özen, Lucia Hartmann, Michel Schaer, Stéphane Suarez, et al.. Crystallization and OFET Performance of a Hydrogen‐Bonded Quaterthiophene. Chemistry - A European Journal, 2020, ⟨10.1002/chem.201904562⟩. ⟨hal-02888863⟩
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