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Synthesis and Photophysics of Dendronized Nanomaterials. Edition No. 1

  • ID: 1912216
  • March 2009
  • 116 Pages
  • VDM Publishing House
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With luminescence quantum efficiencies ranging from
5 to 15%, Cadmium selenide (CdSe) quantum dots (QDs)
are stronger emitters than many organic fluorescent
dyes. Inorganic coated ODs such as (CdSe)ZnS further
increase quantum yield by fully coordinating free
unbound surface electrons by reducing the occurrence
of nonradiative transitions. The electron hole is
confined to the QD core, while the electrons are
delocalized throughout the core/shell structure.
Surface modification of QDs with covalently attached
dendrons offers a means to not only modify
luminosity of the quantum dot, but to also modify
its soluibility. In this dissertation, the synthesis
of CdSe QDs with covalently bound thiol dendrons is
presented. While covalently bonding the dendrons to
the QD did not increase the quantum efficiency or
emission lifetime, the dendrons did effect the
morphology of the quantum dot by replacing the
surface Selenium with Sulfur from the dendron
attachment effectively creating an organically
coated core/shell QD. Elemental analysis is
presented amongst other data as evidence for the
composition of the (CdSe)CdS-Dendron compounds.

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Rolande, Hodel.
Born in Germany, Dr. Hodel is a US citizen and resident
of Cameroon. She received the Astellas USA Foundation
humanitarian award which carries a US$ 30,000 price. She
received her Ph D in Organic Chemistry from the City University
of New York; Nat. Tour Speaker for the American Chemical
Society speaking on “Drug Production in Africa”.

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Note: Product cover images may vary from those shown



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