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)](proportional to) 1 and [Cu(SeMe)](infinity) 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 x 10(-2) cm(2) 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.