Novel Xanthate Complexes for the Size-Controlled Synthesis of Copper Sulfide Nanorods

Abstract

We present a simple, easily scalable route to monodisperse copper sulfide nanocrystals by the hot injection of a series of novel copper(I) xanthate single-source precursors [(PPh)Cu(SCOR)] (R = isobutyl, 2-methoxyethyl, 2-ethoxyethyl, 1-methoxy-2-propyl, 3-methoxy-1-butyl, and 3-methoxy-3-methyl-1-butyl), whose crystal structures are also reported. We show that the width of the obtained rods is dependent on the length of the xanthate chain, which we rationalize through a computational study, where we show that there is a relationship between the ground-state energy of the precursor and the copper sulfide rod width.

Chemical vapor deposition of tin sulfide from diorganotin(IV) dixanthates

“…1a) and diphenyltin bis(isobutylxanthate) [Ph 2 Sn(S 2 CO i Bu) 2 ] (2, Fig. 1b) were synthesized from the reaction of the corresponding potassium xanthate [43] and diphenyltin dichloride. The free sulfur atoms do not appear to interact with other atoms in the packed structure (ESI Figures S1.1 and S1.2).…”

“…Synthesis of potassium 2-methoxyethylxanthate [KS 2 CO(CH 2 ) 2 OMe] Potassium 2-methoxyethylxanthate was prepared according to our previously published procedure [43]. Potassium hydroxide (11.2 g, 0.20 mol) was dissolved in (75 ml) of 2-methoxyethanol, the reactors were stirred for 6 h at 0°C, and then a solution of CS 2 (15.2 g, 12 ml, 0.20 mol) in 2-methoxyethanol (25 ml) was added dropwise, resulting in a clear yellow solution.…”

“…We have recently focused our attention on the use of single-source precursors to synthesize metal chalcogenide thin films and nanoparticles. In particular, we, and others, have found that simple metal xanthates [M(S 2 COR) x ] and dithiocarbamates [M(S 2-CNR 2 ) x ] (R = alkyl) are excellent precursors to metal sulfides [5,[40][41][42][43][44][45][46][47][48]. In this report, we discuss the use of the diorganotin(IV) dixanthate complexes as precursors for the production of SnS thin films by aerosol-assisted chemical vapor deposition (AA-CVD).…”

Important Phase Control of Indium Sulfide Nanomaterials by Choice of Indium(III) Xanthate Precursor and Thermolysis Temperature

“…By choice of ligand McNaughter et al, demonstrated size control of PbS within melts and when mixed in polystyrene. Variation of xanthate ligand length was also explored in Cu x S y demonstrating a similar effect on particle size . Various ternary phases have also been accessed using metal xanthate complexes .…”

“…Xanthate metal complexes are a class of dithiolates with breakdown temperatures typically lower than that of metal dithiocarbamates. Metal xanthate complexes have been explored to produce thin films and nanoparticles of a variety of metal chalcogenides at low temperatures ideal for large scale industrial processes where energy use is a major factor . By choice of ligand McNaughter et al, demonstrated size control of PbS within melts and when mixed in polystyrene.…”