Studying of Quantum Dots Langmuir Monolayers Stability at the Different Subphase Temperature

The monolayer of CdSe/CdS/ZnS quantum dots was formed on the water surface at 11, 21, and 31 °C and studied by compression isotherms. Increasing subphase temperature increases the lift-off point of the monolayer and decreases the minimum area which can be reached on compression. Compression changes...

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Bibliographic Details
Published in:BioNanoScience 2017-12, Vol.7 (4), p.686-691
Main Authors: Gorbachev, Ilya A., Shtykov, Sergey N., Brezesinski, Gerald, Glukhovskoy, Evgeny G.
Format: Article
Language:English
Subjects:
Biological and Medical Physics
Biomaterials
Biophysics
Cadmium sulfide
Circuits and Systems
Compression
Diffusion layers
Diffusion rate
Engineering
Fluid dynamics
Langmuir-Blodgett films
Monolayers
Nanotechnology
Quantum dots
Temperature
Temperature effects
Thickness
Turbulence
Zinc sulfide
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Summary:The monolayer of CdSe/CdS/ZnS quantum dots was formed on the water surface at 11, 21, and 31 °C and studied by compression isotherms. Increasing subphase temperature increases the lift-off point of the monolayer and decreases the minimum area which can be reached on compression. Compression changes the monolayer state from LE to LC. The highest compression state can be reached at the lowest subphase temperatures. Increasing water subphase temperature leads to increasing homogeneity of the monolayers. Increasing subphase temperature leads to increasing quiescent layer thickness and diffusion rate. At the high subphase temperature, a duration of collective flowing of desorption processes from water interface to quiescent layer and from quiescent layer to turbulent layer is decreasing that connected with reaching a quiescent layer with which the saturation does not take a place at the achieved diffusion rate.
ISSN:2191-1630
2191-1649
DOI:10.1007/s12668-017-0404-4