Structurally ordered organic semiconductor nanoparticles, which form a stable nanoparticle dispersion in an appropriate liquid, are generated from regioregular poly(3,3‴-didodecylquarterthiophene) (PQT-12). This dispersion enables facile solution fabrication of high-performance semiconductor layers composed of extensive crystalline domains of lamellar π–π stacks (see Figure), yielding organic thin-film transistors with excellent field-effect-transistor properties.
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