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

doi:10.1023/A:1024889504216

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

Chemistry

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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.

Original language	English (US)
Pages (from-to)	123-133
Number of pages	11
Journal	Journal of Cluster Science
Volume	14
Issue number	2
DOIs	https://doi.org/10.1023/A:1024889504216
State	Published - Jun 1 2003

Keywords

Air/water interface
CdSe
ESEM
Molecular area
Monolayer
QDs
Surface pressure

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Surface Chemistry Studies of Quantum Dots (QDs) Modified with Surfactants",

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.",

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AU - Sui, Guodong

AU - Orbulescu, Jhony

AU - Ji, Xiaojun

AU - Gattás-Asfura, Kerim M.

AU - Leblanc, Roger M.

AU - Micic, Miodrag

PY - 2003/6/1

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N2 - 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.

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