|
|||||
|
|
Magnetic resonance tracking of copper ion fixation on the surface of carboxylated nanodiamonds from viewpoint of changes in carbon-inherited paramagnetism |
|
| Institution: | 1. Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russian Federation;2. School of Engineering Science, LUT University, 53850 Lappeenranta, Finland;3. Joint-Stock Company ‘Svetlana-Semiconductors’, 194156 St. Petersburg, Russian Federation;4. Institute of Chemistry, Saint Petersburg State University, 198504 Petergof, St. Petersburg, Russian Federation;5. Saint Petersburg State Institute of Technology, 190013 St. Petersburg, Russian Federation;6. Department of Chemical Science and Technology, Hosei University, Koganei, 184-8584 Tokyo, Japan;7. Department of Electrical and Electronic Engineering, Tokyo Denki University, 120-8551 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 |
| 本文献已被 ScienceDirect 等数据库收录！ | |