Charge transfer (CT) cocrystals, consisting of strong electron donors and acceptors, often crystallize as one-dimensional nanowires. Many of these materials possess interesting optical and electronic properties, including very low band gaps and good charge carrier mobilities for both holes and electrons. We present work on a number of these systems, showing that nanowires can be produced in suspension using a nanoprecipitation method, in which crystallization is induced by rapidly mixing a solution with a miscible non-solvent. We also demonstrate that aligned nanofibers can be deposited from solution using a controlled evaporation method, enabling the creation of devices with the CT cocrystals as the active semiconductor.

Formation of organic charge transfer nanowires in solution

254th National Meeting (2017)

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