Ionic liquid-based surfactants synthesis

Ionic Liquid-Based Surfactants Synthesis, Moiecuiar Structure,... 

A new one phase method for the synthesis of uniform monodisperse crystalline Ag nanoparticles in aqueous systems was developed by using newly synthesized mono and dihydroxylated ionic liquids and cationic surfactants based on 1,3-disubstituted imidazolium cations and halogens anions. The hydroxyl functionalized ionic liquids and hydroxyl functionalized cationic surfactants simultaneously act both as the reducing and protective agent. By changing the carbon chain length, alcohol structure and anion of the hydoxy-functionalized 1,3-imidazolium based ionic liquids and the hydroxyl functionalized cationic surfactants the particle size, uniformity and dispersibility of nanoparticles in aqueous solvents could be controlled (Dorjnamjin et al, 2008). 

If metal salts are heated in a solvent or solvent mixtures in the presence of thiourea, then metal sulfides are accessible. Based on this idea, thiourea has been widely used as a sulfur source in nonaqueous syntheses of ternary and quaternary metal chalcogenides [139-142]. Ai and Jiang presented the synthesis of hierarchical porous Cu2FeSnS4 hollow chain microspheres via a surfactant-assisted microwave-solvothermal approach using ben2yl alcohol [143]. Ionic liquids have also been used as solvents for the formation of metal sulfides MS (M = Cd, Zn, and Pb) by the reaction of thioacetamide with metal acetates in imidazolium-based ionic liquids [144]. 

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