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JOURNALS // Mendeleev Communications // Archive
Mendeleev Commun., 2022 Volume 32, Issue 1, Pages 132–135 (Mi mendc595)
This article is cited in 6 papers

Communications

Magnetic resonance tracking of copper ion fixation on the surface of carboxylated nanodiamonds from viewpoint of changes in carbon-inherited paramagnetism

V. Yu. Osipova, N. M. Romanovbc, I. E. Suvorkovad, E. V. Osipovae, T. Tsujif, Ya. Ishigurog, K. Takaif

a Ioffe Institute, St. Petersburg, Russian Federation
b School of Engineering Science, LUT University, Lappeenranta, Finland
c Joint-Stock Company 'Svetlana-Semiconductors', St. Petersburg, Russian Federation
d Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russian Federation
e St. Petersburg State Institute of Technology (Technical University), St. Petersburg, Russian Federation
f Department of Chemical Science and Technology, Hosei University, Tokyo, Japan
g Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo, Japan

Abstract: Detonation nanodiamonds with a particle size of 5 nm and a carboxylated surface are easily modified by doubly charged copper ions to form copper chelate complexes. The concentration of copper complexes in a dry powder of such nanodiamonds is well monitored by the method of electron paramagnetic resonance, both by the signal width of intrinsic paramagnetic centers in nanodiamonds and by the signal shape for the surface Cu2+ ions themselves, including the set of hyperfine splitting lines for the parallel component and the line with an unresolved hyperfine structure for the perpendicular component.

Keywords: detonation nanodiamond, copper ions, chelate complexes, surface functional groups, spin paramagnetism, elemental analysis, electron paramagnetic resonance.

Language: English

DOI: 10.1016/j.mencom.2022.01.043



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