Homoleptic copper(I) phenylselenolate polymer as a single-source precursor for Cu₂Se nanocrystals. Structure, photoluminescence and application in field-effect transistor

We present the one-dimensional polymeric structures of [Cu(SePh)] _∞ 1 and [Cu(SeMe)]_∞ 2 that were solved by using powder X-ray diffraction data. Using a field-effect transistor (FET) set-up, the hole mobility of complex 1 was found to be 4 × 10^-2 cm² V^-1 s^-1, comparable to that of regioregular poly-(3-hexylthiophene) (P3HT). Phase-pure orthorhombic and cubic Cu2Se were synthesized from 1 as a single precursor under vacuum and inert atmosphere, respectively. © 2010 The Royal Society of Chemistry.