Method for preparing nanoparticles using carbene derivatives

A method for preparing nanoparticles comprising adding one or more precursors with one or more metal precursors, wherein the one or more metal precursors are selected from the group consisting of dimethyl zinc, diethyl zinc, zinc acetate, zinc acetylacetonate, zinc iodide, zinc bromide, zinc chloride, zinc fluoride, zinc carbonate, zinc cyanide, zinc nitrate, zinc oxide, zinc peroxide, zinc perchlorate, zinc sulfate, dimethyl cadmium, diethyl cadmium, cadmium acetate, cadmium acetylacetonate, cadmium iodide, cadmium bromide, cadmium chloride, cadmium fluoride, cadmium carbonate, cadmium nitrate, cadmium oxide, cadmium perchlorate, cadmium phosphide, cadmium sulfate, mercury acetate, mercury iodide, mercury bromide, mercury chloride, mercury fluoride, mercury cyanide, mercury nitrate, mercury oxide, mercury perchlorate, mercury sulfate, lead acetate, lead bromide, lead chloride, lead fluoride, lead oxide, lead perchlorate, lead nitrate, lead sulfate, lead carbonate, tin acetate, tin bisacetylacetonate, tin bromide, tin chloride, tin fluoride, tin oxide, tin sulfate, germanium tetrachloride, germanium oxide, germanium ethoxide, gallium acetylacetonate, gallium chloride, gallium fluoride, gallium oxide, gallium nitrate, gallium sulfate, indium chloride, indium oxide, indium acetate, indium nitrate, and indium sulfate to an organic solvent to grow a crystal, wherein the precursors are chosen from the group consisting of Formula 1:

• wherein X is O, S, Se, Te or Po;
• R1 and R2 are each independently substituted or unsubstituted C5-C50 aryl, or substituted or unsubstituted C1-C50 alkyl;
• and
• substituents of R1 and R2, which are identical to or different from each other, are each independently chosen from the group consisting of C1-C20 alkyl, C3-C20 cycloalkyl, C5-C30 heterocycloalkyl, C2-C20 alkenyl, C6-C20 aryl, C5-C30 heteroaryl, C7-C20 arylalkyl, C7-C30 heteroarylalkyl or carbonyl;
• and Formula 2
• wherein X is O, S, Se, Te or Po;
• R1 and R2 are each independently substituted or unsubstituted C5-C50 aryl, or substituted or unsubstituted C1-C50 alkyl;
• and
• Substituents of R3 and R4, which are identical to or different from each other, are each independently chosen from the group consisting of C1-C20 alkyl, C3-C20 cycloalkyl, C5-C30 heterocycloalkyl, C2-C20 alkenyl, C6-C20 aryl, C5-C30 heteroaryl, C7-C20 arylalkyl, C7-C30 heteroarylalkyl or carbonyl.