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Physics of the Solid State

, Volume 60, Issue 12, pp 2565–2570 | Cite as

Temperature Quenching and Fluorescence Depolarization of Carbon Nanodots Obtained via Paraffin Pyrolysis

  • A. N. StarukhinEmail author
  • D. K. Nelson
  • D. A. Kurdyukov
  • D. A. Eurov
  • V. G. Golubev
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Abstract

A temperature effect on fluorescence intensity and polarization of a colloidal system of carbon nanodots in glycerol under linearly polarized pumping conditions is studied. Nanodots are obtained via pyrolysis of paraffin in nanopores of a mesoporous silica. An increase in temperature leads to quenching of nanodots fluorescence, and activation energy of the quenching process is assessed. An experimental relationship between the linear fluorescence polarization and temperature is described by the Levshin–Perrin equation, which takes into account the rotational diffusion of luminescent particles (fluorophores) in a liquid matrix. The size of fluorophores is noticeably smaller than that of carbon nanodots according to the Levshin–Perrin model. A difference between the dimensions of the fluorophore and the nanodot indicates that the small atomic groups responsible for luminescence of the nanodot possess high segmental mobility.

Notes

ACKNOWLEDGMENTS

This work was partially supported by the Russian Foundation for Basic Research (project no. 16-03-00472).

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. N. Starukhin
    • 1
    Email author
  • D. K. Nelson
    • 1
  • D. A. Kurdyukov
    • 1
  • D. A. Eurov
    • 1
  • V. G. Golubev
    • 1
  1. 1.Ioffe InstituteSt. PetersburgRussia

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