AuI⋯AuI interaction induced semiconducting microwires with photo- and vapor-responsive properties

Organic semiconducting microwires can be self-assembled from a trinuclear gold(I) complex Au3I(MeNCOMe)3 (Au3A3) based on extended intermolecular AuI⋯AuI interactions by a simple solution method. High mobility (0.23 cm2 V−1 s−1) of the microwires measured in ambient conditions by organic field-effect transistor (OFET) devices was achieved, vapor and photo responsive conductive characteristics with great sensibility, reversibility and rapid response were also revealed. The AuI⋯AuI interaction based structure of the Au3A3 microwires can broaden the scope of nano- and micro-scale organic semiconductors and will be valuable for the future design and synthesis of new organic semiconducting materials and also have potential in the fields of chemo-sensing and photo detectors.

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► Au3A3 microwires were assembled based on intermolecular AuI⋯AuI interactions.
► We fabricated organic field-effect transistor (OFET) devices with the wires.
► The microwires devices exhibited high hole mobility (0.23 cm2 V−1 s−1).
► The microwires showed vapor-/photo-switchable conductive characteristics.