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Crystallization and Organic Field‐Effect Transistor Performance of a Hydrogen‐Bonded Quaterthiophene
Author(s) -
Gebers Jan,
Özen Bilal,
Hartmann Lucia,
Schaer Michel,
Suàrez Stéphane,
Bug Philippe,
Scopelliti Rosario,
Steinrück HansGeorg,
Konovalov Oleg,
Magerl Andreas,
Brinkmann Martin,
Petraglia Riccardo,
Silva Piotr,
Corminboeuf Clémence,
Frauenrath Holger
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201904562
Subject(s) - materials science , crystallinity , crystallization , thin film , organic semiconductor , intermolecular force , crystallite , thin film transistor , layer (electronics) , supramolecular chemistry , nanotechnology , field effect transistor , organic electronics , crystal (programming language) , chemical engineering , crystallography , crystal structure , transistor , molecule , optoelectronics , composite material , organic chemistry , chemistry , voltage , computer science , engineering , quantum mechanics , metallurgy , programming language , physics
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.