A Continuous-Flow Microcapillary Reactor for the Preparation of a Size Series of CdSe Nanocrystals


  • This work was supported in part by the MRSEC Program of the National Science Foundation under award number DMR 02-13282 and the NSF-CRC program under award number CHE-0209898. B.K.H. Yen acknowledges support from the Department of Defense NDSEG Fellowship Program.


A microcapillary flow reactor has been used to prepare a size series of colloidal CdSe nanocrystals (NCs). The continuous-flow method (see Figure for schematic) produces samples with size distributions and quantum yields comparable to those prepared in conventional batch processes. The results obtained from the reactor provide insight into the kinetics of nucleation and growth for NC systems.