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.
Citation:
A. N. Starukhin, D. K. Nelson, D. A. Kurdyukov, D. A. Eurov, V. G. Golubev, “Temperature quenching and fluorescence depolarization of carbon nanodots obtained via paraffin pyrolysis”, Fizika Tverdogo Tela, 60:12 (2018), 2409–2414; Phys. Solid State, 60:12 (2018), 2565–2570
\Bibitem{StaNelKur18}
\by A.~N.~Starukhin, D.~K.~Nelson, D.~A.~Kurdyukov, D.~A.~Eurov, V.~G.~Golubev
\paper Temperature quenching and fluorescence depolarization of carbon nanodots obtained via paraffin pyrolysis
\jour Fizika Tverdogo Tela
\yr 2018
\vol 60
\issue 12
\pages 2409--2414
\mathnet{http://mi.mathnet.ru/ftt8980}
\crossref{https://doi.org/10.21883/FTT.2018.12.47353.186}
\elib{https://elibrary.ru/item.asp?id=36929232}
\transl
\jour Phys. Solid State
\yr 2018
\vol 60
\issue 12
\pages 2565--2570
\crossref{https://doi.org/10.1134/S1063783418120284}
Linking options:
https://www.mathnet.ru/eng/ftt8980
https://www.mathnet.ru/eng/ftt/v60/i12/p2409
This publication is cited in the following 1 articles:
He Chen, Tianyang You, Lingfeng Zong, Liliya I. Mukhametova, Dmitry O. Zherdev, Sergei A. Eremin, Yuan Ding, Minghua Wang, Xiude Hua, “Competitive and noncompetitive fluorescence polarization immunoassays for the detection of benzothiostrobin using FITC-labeled dendrimer-like peptides”, Food Chemistry, 360 (2021), 130020
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