Inhomogeneity is suppressed. Even the best preparation methods yield
populations of nanoparticles which differ not only in size and shape,
but also in the presence and distribution of bulk and surface defects,
in chemical composition, etcetera. As in the case of semiconductor
nanocrystals, of conjugated polymers, or of bio-molecules, the selec-
tion of individuals is the only possible access to well-defined objects.
This is a marked difference with chemically synthesized small mole-
cules, whose inhomogeneity usually exclusively arises from their local
environment.
Inhomogeneity is suppressed. Even the best preparation methods yield populations of nanoparticles which differ not only in size and shape, but also in the presence and distribution of bulk and surface defects, in chemical composition, etcetera. As in the case of semiconductor nanocrystals, of conjugated polymers, or of bio-molecules, the selec- tion of individuals is the only possible access to well-defined objects. This is a marked difference with chemically synthesized small mole- cules, whose inhomogeneity usually exclusively arises from their local environment.
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