July 10, 2013 — Preparing semiconductor quantum dots is sometimes more of a   
   black art than a science. That presents an obstacle to further progress in,   
   for example, creating better solar cells or lighting devices, where quantum   
   dots offer unique    
   advantages that would be particularly useful if they could be used as basic   
   building blocks for constructing larger nanoscale architectures.   
      
   Andrew Greytak, a chemist in the College of Arts and Sciences at the   
   University of South Carolina, is leading a research team that's making the   
   process of synthesizing quantum dots much more systematic. His group just   
   published a paper in Chemistry of    
   Materials detailing an effective new method for purifying CdSe nanocrystals   
   with well-defined surface properties.   
      
   http://www.sciencedaily.com/releases/2013/07/130710155734.htm   
      
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