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

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Abstract

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.

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Acknowledgements

The work was supported by grant of Russian Science Foundation RSF-14-12-00275 and National Research Saratov State University.

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Authors and Affiliations

  1. Faculty of Nano- and Biomedical Technologies, Department of Material Science, Technology and Quality Management, Saratov State University, 112a Bolshaya Kazachiya Street, Saratov, Russia, 410012

    Ilya A. Gorbachev

  2. Department of Analytical Chemistry and Chemical Ecology, Institute of Chemistry, Saratov State University, 112a Bolshaya Kazachiya Street, Saratov, Russia, 410012

    Sergey N. Shtykov

  3. Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Golm, 14476, Potsdam, Germany

    Gerald Brezesinski

  4. Education and Research Institute of Nanostructures and Biosystems, Saratov State University, Saratov, Russia, 410012

    Evgeny G. Glukhovskoy

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  1. Ilya A. Gorbachev
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  2. Sergey N. Shtykov
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  3. Gerald Brezesinski
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  4. Evgeny G. Glukhovskoy
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Correspondence to Ilya A. Gorbachev.

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Gorbachev, I.A., Shtykov, S.N., Brezesinski, G. et al. Studying of Quantum Dots Langmuir Monolayers Stability at the Different Subphase Temperature. BioNanoSci. 7, 686–691 (2017). https://doi.org/10.1007/s12668-017-0404-4

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