Small Is Different: Shape-, Size-, and Composition-Dependent Properties of Some Colloidal Semiconductor Nanocrystals

In this Account, we describe the changes of some interesting properties in different colloidal semiconductor nanoparticles, such as the electronic relaxation rates as spherical nanoparticles change to nanorods, and the changes in the structure or size of very small nanoparticles upon adsorbing strongly bound molecules

Mostafa A. El-Sayed

2004

Key concepts

Scholarcy highlights

  • As the size of material becomes equal to or falls below the nanometer length scale that characterizes the motion of its electrons and its properties, the latter become sensitive to the size and to the shape and composition of the particles
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  • In this Account, we describe the changes of some interesting properties in different colloidal semiconductor nanoparticles, such as the electronic relaxation rates as spherical nanoparticles change to nanorods, and the changes in the structure or size of very small nanoparticles upon adsorbing strongly bound molecules
  • We have determined and explained the difference in the interfacial crossing rates of electrons and holes in a composite nanostructure

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