Journal of Cluster Science

, Volume 14, Issue 2, pp 123–133

Surface Chemistry Studies of Quantum Dots (QDs) Modified with Surfactants

  • Guodong Sui
  • Jhony Orbulescu
  • Xiaojun Ji
  • Kerim M. Gattás-Asfura
  • Roger M. Leblanc
  • Miodrag Micic
Article

DOI: 10.1023/A:1024889504216

Cite this article as:
Sui, G., Orbulescu, J., Ji, X. et al. Journal of Cluster Science (2003) 14: 123. doi:10.1023/A:1024889504216

Abstract

Since luminescent CdSe quantum dots (QDs) have shown great potential in biological labeling, the surface chemistry behavior of QDs at interfaces is of great research interest. In the present study, CdSe QDs with green luminescence were modified with hydrophobic chains of varying lengths [from C6 to C18]. These modified QDs can be utilized to form stable monolayers at the air/water interface. Surface pressure-area isotherms of modified QDs have been measured and limiting molecular areas have also been extrapolated in order to analyze the size of the QDs. UV absorption spectra of modified QDs at various surface pressures were also determined. Surface chemistry, as well as the topographic properties, of modified QDs in Langmuir and L-B films was discussed.

QDs CdSe monolayer air/water interface surface pressure molecular area ESEM 

Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • Guodong Sui
    • 1
  • Jhony Orbulescu
    • 1
  • Xiaojun Ji
    • 1
  • Kerim M. Gattás-Asfura
    • 1
  • Roger M. Leblanc
    • 1
  • Miodrag Micic
    • 2
  1. 1.Department of ChemistryUniversity of MiamiCoral Gables
  2. 2.Pacific Northwest National LaboratoryRichland

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