English to Russian Tech/Engineering Electronics / Elect Eng

Subsequently, a ligand exchange reaction was carried out where the bulky oleate ligands were exchanged with shorter-chain octylamine or ethanethiol ligands in a nitrogen glove box over a period of 48 hours, where: after precipitating the nanocrystals in acetone, the nanocrystals were redispersed in 10 ml of octylamine; or, after redispersing the nanocrystals in toluene, an equal volume of ethanethiol was added to the suspension. Subsequently, the ligand exchanged particles were precipitated with acetone and finally redispersed in chloroform at a concentration of about 60 mg/ml. The exchange of oleate passivating groups with octylamine resulted in a clear dispersion with no agglomeration of particles.

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