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

El-Sayed, Mostafa A.·2004·Accounts of Chemical Research

Abstract

As the size of material becomes equal to or falls below the nanometer length scale that characterizes the motion of its electrons and thus its properties, the latter become sensitive not only to the size but also to the shape and composition of the particles. 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 also determined and explained the difference in the interfacial crossing rates of electrons and holes in a composite nanostructure.

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Metadata

Authors
El-Sayed, M. A.
Venue
Accounts of Chemical Research
Published
2004-03-13
Volume
37
Issue
5
Pages
326-333
ISSN
  • 0001-4842 (ISSN-L)
  • 1520-4898
OpenAlex
W2952246018
Cited by
903
References
1
FWCI
21.87
Type
journal article
Language
en
Open access
closed

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