Injectable Drug Composition For Treating Atherosclerosis and Method For Using Same

A method of manufacturing an ink composition for depositing of a photoactive layer of an optoelectronic device, the method comprising:

• providing a first phase liquid comprising a nonpolar solvent with nanoparticles dispersed in the nonpolar solvent, which nanoparticles are capped with a shell of first ligands, the first ligands comprising a surface binding head group and an alkyl or alkenyl tail for, at least initially, keeping the nanoparticles in a colloidal suspension in the nonpolar solvent;
• providing a second phase liquid comprising a first polar solvent with second ligands dissolved therein, the second ligands having a molecular architecture including:
• a thiol head group for binding to a surface site of said nanoparticle;
• an ionically charged tail group having a counter ion associated therewith;
• and
• an alkyl spacer separating the head group and the tail group having a total number of carbon atoms in a range from 1 to 3,
• a biphasic ligand exchange process wherein the second ligands displace the first ligands that are bound to the nanoparticles thereby releasing the first ligands to the first phase liquid, the biphasic ligand exchange process comprising contacting the first and second phase liquid to form a dispersion of the nanoparticles that are capped with a shell of the second ligands in the second phase liquid.