TY - JOUR
T1 - CdSe and CdSe(ZnS) quantum dots in 2D
T2 - A Langmuir monolayer approach
AU - Crawford, Nicholas F.
AU - Leblanc, Roger M.
PY - 2014/3/15
Y1 - 2014/3/15
N2 - Recent years have produced many advances in quantum dot synthesis, application and analysis while their importance in the fields of chemistry, biology, engineering and physics has grown as well. Opposed to the bulk state properties, quantum dots are dependent upon the quantum confinement effect in all three spatial dimensions and so their applications have been broadened to optical switches and fluorescence labeling among others. Compiled here are extensive results in the characterization of quantum dots using the Langmuir monolayer technique to approach these quantum dots in their two dimensional state. Variation of ligands around the nanoparticles at the air-water interface has revealed that a more condensed packing state is achieved with the use of smaller ligands. Properties such as the limiting nanoparticle area, molar absorptivity, and self-assembly manipulation have shown the local-hexagonal packing structure of the quantum dots at the air-water interface. As characterized by an expansion on the Langmuir technique, film thickness has also been analyzed under AFM and HR-TEM to observe the multilayer effect during isotherm formation.
AB - Recent years have produced many advances in quantum dot synthesis, application and analysis while their importance in the fields of chemistry, biology, engineering and physics has grown as well. Opposed to the bulk state properties, quantum dots are dependent upon the quantum confinement effect in all three spatial dimensions and so their applications have been broadened to optical switches and fluorescence labeling among others. Compiled here are extensive results in the characterization of quantum dots using the Langmuir monolayer technique to approach these quantum dots in their two dimensional state. Variation of ligands around the nanoparticles at the air-water interface has revealed that a more condensed packing state is achieved with the use of smaller ligands. Properties such as the limiting nanoparticle area, molar absorptivity, and self-assembly manipulation have shown the local-hexagonal packing structure of the quantum dots at the air-water interface. As characterized by an expansion on the Langmuir technique, film thickness has also been analyzed under AFM and HR-TEM to observe the multilayer effect during isotherm formation.
KW - Langmuir monolayer
KW - Langmuir-Blodgett films
KW - Langmuir-Schaefer films
KW - Quantum dots
UR - http://www.scopus.com/inward/record.url?scp=84895900736&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84895900736&partnerID=8YFLogxK
U2 - 10.1016/j.ccr.2013.07.023
DO - 10.1016/j.ccr.2013.07.023
M3 - Review article
AN - SCOPUS:84895900736
VL - 263-264
SP - 13
EP - 24
JO - Coordination Chemistry Reviews
JF - Coordination Chemistry Reviews
SN - 0010-8545
IS - 1
ER -