lead thiocyanate (Pb(SCN)2, 99.5%), cesium carbonate (Cs2CO3, 99%), oleylamine (OLAM, 70%), oleic acid (OA,
90%), 1-octadecene (ODE, 90%), tetrachloroethylene, toluene (anhydrous,
99.8%), lead(II) acetate trihydrate (≥99.5%), benzoyl bromide
(97%), and dodecane were purchased from Sigma-Aldrich. Cesium acetate
(99%) and ethyl acetate (≥99.5%) were purchased from Fisher
Scientific. All chemicals were used without further purification;
lead compounds were stored inside a nitrogen-filled glovebox.