TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The semiconductor nanocrystals comprise: binary compounds including zinc oxide, zinc sulfide, zinc selenide, zinc telluride, cadmium oxide, cadmium sulfide, cadmium selenide, cadmium telluride, mercury sulfide, mercury selenide, mercury telluride, gallium nitride, gallium phosphide, gallium arsenide, indium nitride, indium phosphide, indium arsenide, lead sulfide, lead selenide and lead telluride; ternary compounds including cadmium selenium sulfide, cadmium selenium telluride, cadmium sulfur telluride, zinc selenium sulfide, zinc selenium telluride, zinc sulfur telluride, cadmium zinc sulfide, cadmium zinc selenide, cadmium zinc telluride, gallium nitrogen phosphide, gallium nitrogen arsenide, gallium nitrogen antimonide, gallium phosphorus arsenide, gallium phosphorus antimonide, indium nitrogen phosphide, indium nitrogen arsenide, indium nitrogen antimonide, indium phosphorus arsenide, indium phosphorus antimonide, gallium aluminum nitrogen phosphide, gallium aluminum nitrogen arsenide, gallium aluminum nitrogen antimonide, gallium aluminum phosphorus arsenide, gallium aluminum phosphorus antimonide, gallium indium nitrogen phosphide, gallium indium nitrogen arsenide, gallium indium nitrogen antimonide, gallium indium phosphorus arsenide, gallium indium phosphorus antimonide, indium aluminum nitrogen phosphide, tin selenium sulfide, tin selenium telluride, tin sulfur telluride, lead selenium sulfide, lead selenium telluride, lead sulfur telluride and tin lead sulfide; and quaternary compounds including cadmium zinc selenium sulfide, cadmium zinc selenium telluride, cadmium zinc sulfur telluride, cadmium mercury selenium sulfide, cadmium mercury selenium telluride, cadmium mercury sulfur telluride, mercury zinc selenium sulfide, mercury zinc selenium telluride, mercury zinc sulfur telluride, n lead sulfur selenide, tin lead selenium telluride and tin lead sulfur telluride.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The halogenated solvent comprises 1-18C alkane, 2-18C alkene, toluene, phenol and benzene, each of which is substituted with halogens, and further comprises dichloromethane, chloroform, tetrachloromethane, dibromomethane, bromoform, tetrabromomethane, diiodomethane, iodoform, tetraiodomethane and tetrachloroethylene. The tertiary phosphine is a tertiary phosphine oligomer and a tertiary phosphine polymer. A carbon branch of the tertiary phosphine comprises 3-18C alkane, 3-18C alkene, 3-18C saturated aliphatic amine, 3-18C unsaturated aliphatic amine, 3-18C saturated aliphatic alcohol, 3-18C unsaturated aliphatic alcohol, 3-18C saturated fatty acid, 3-18C unsaturated fatty acid, 3-18C saturated aliphatic thiol, 3-18C unsaturated aliphatic thiol, phenyl, and benzyl. The primary amine is a 1-18C saturated aliphatic amine or a 1-18C unsaturated aliphatic amine, 1-18C alkane having primary amine functional groups, 2-18C alkene having primary amine functional groups, an oligomer having a primary amine functional group, and a polymer having a primary amine functional group.