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Current Nanoscience

Author(s): Yuriy Galyametdinov*, V. Osipova, A. Kurilov, V. Belyaev, D. Chausov and A. Belyaev

DOI: 10.2174/1573413718666220526101047

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Optical Properties of a Composite System with Nematic LC and Colloids Quantum Dots

Page: [64 - 67] Pages: 4

  • * (Excluding Mailing and Handling)

Abstract

Background: Optical luminescence in a composite system with nematic LC 4- octyloxy-4’-cyanobuphenyl (8OCB) and semiconductor quantum dots CdSe/CdS and CdSe/CdS/ZnS has been synthesized by a water-organic method.

Methods: Composites have been investigated by means of polarizing microscopy, dynamic light scattering, and measurements of dielectric properties in the frequency range from 20 Hz to 5 MHz. The non-radiative excitation energy transfer from the liquid crystal molecules to the quantum dot in the LC-QD composite is detected by using the luminescence spectroscopy method.

Results: This effect as well as the shift of the luminescence band is owing to components’ intermolecular interaction.

Conclusion: The optimal concentration of QD in a composite that enhanced luminescence intensity was detected.

Keywords: Liquid crystal, quantum dot, luminescence, composite system, florescence band, energy transfer.

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