trioctylphosphine oxide in further solvent(s) mixing of CuOAc, In(OAc)3 and trioctylphosphine oxide with oleylamine (or 1-octadecene) under vac. at room temp. for 30 min, heating to 240°C under N2, rapid injecting of mixt. of 1-dodecanethiol and tert-dodecanethiol; monitoring by XRD and TEM for 1 h, cooling to room temp., pptn., washingwith EtOH, redissolving in hexane;