Synthesis
of Ultrasmall and Magic-Sized CdSe Nanocrystals
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Abstract
Nanocrystals
exhibit useful properties not found in their bulk
counterparts; however, a subclass of nanocrystals that consist of
diameters on the order of 2 nm or less further exhibit unique properties.
As synthetic methodologies of nanocrystals have matured, greater emphasis
has been made on controlling the early stages of the reaction in order
to gain access to these sub-2 nm species. This review provides an
overview of ultrasmall and magic-sized nanocrystals, and the diverse
chemical means to obtain them. Due to their small size and their resultant
properties, these ultrasmall and magic-sized nanocrystals have a distinct
advantage in many applications including achieving renal clearance
for the purpose of biological imaging, producing simple and high-quality
white LEDs, and controlling the growth of nanocrystals to produce
various morphologies