Rapid, high yield, solution-mediated transformation of polycrystalline selenium powder into single-crystal nanowiresElectronic supplementary information (ESI) available: histogram of diameter distribution of as-prepared single-crystalline trigonal selenium nanowires. See http://www.rsc.org/suppdata/cc/b3/b303755j/

Single-crystal selenium nanowires were successfully synthesized for the first time by a convenient solution-mediated transformation of polycrystalline powder, and characterized by SEM, XRD, TEM and HRTEM.