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FROM GUEST EDITORIAL
Thermal-lens spectrometer for studying thermophysical properties of fullerenes
I. V. Mikheevab, L. O. Usoltsevaab, D. A. Ivshukova, D. S. Volkovab, M. V. Korobova, M. A. Proskurninab a Chemistry Department, Lomonosov Moscow State University, Moscow, Russia
b Analytical Centre of Lomonosov Moscow State University / Agilent Technologies Authorized Partner
Laboratory, Moscow, Russia
Abstract:
A thermal-lens spectrometer implementing back-synchronized detection technique with a mode-mismatched optical scheme was constructed. Steady-state and transient signals of thermal-lens spectrometry are used to characterize concentration parameters of aqueous fullerene dispersions (AFDs) at the level of 10$^{-7}$ – 10$^{-5}$ M and to assess thermophysical properties of AFDs. The detection limits of fullerenes in AFDs are 100 nM for C$_{60}$, 80 nM for C$_{70}$ and C$_{78}$ – C$_{88}$, and 60 nM for Y@C$_{82}$, which are
20-fold lower than for spectrophotometry. Suitable precision of measurements of thermal diffusivity and thermal effusivity for AFDs is shown.
Keywords:
thermal-lens spectrometry, pristine fullerenes, aqueous fullerene dispersions, thermal diffusivity.
Received: 21.06.2017 Revised: 10.09.2017
Citation:
I. V. Mikheev, L. O. Usoltseva, D. A. Ivshukov, D. S. Volkov, M. V. Korobov, M. A. Proskurnin, “Thermal-lens spectrometer for studying thermophysical properties of fullerenes”, Nanosystems: Physics, Chemistry, Mathematics, 9:1 (2018), 14–16
Linking options:
https://www.mathnet.ru/eng/nano112 https://www.mathnet.ru/eng/nano/v9/i1/p14
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Abstract page: | 47 | Full-text PDF : | 20 |
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