Towards Determination of Distances Between Nanoparticles and Grafted Paramagnetic Ions by NMR Relaxation
| Autor: | Alexander M. Panich, N. A. Sergeev |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Oxide
Analytical chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Condensed Matter::Materials Science Paramagnetism chemistry.chemical_compound law Molecule Physics::Chemical Physics Original Paper Electron nuclear double resonance Graphene Chemistry Relaxation (NMR) 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Condensed Matter::Soft Condensed Matter Physical chemistry Condensed Matter::Strongly Correlated Electrons Density functional theory 0210 nano-technology |
| Zdroj: | Applied Magnetic Resonance |
| ISSN: | 1613-7507 0937-9347 |
| DOI: | 10.1007/s00723-017-0952-3 |
| Popis: | We developed an approach for determining distances between carbon nanoparticles and grafted paramagnetic ions and molecules by means of nuclear spin-lattice relaxation data. The approach was applied to copper-, cobalt- and gadolinium-grafted nanodiamonds, iron-grafted graphenes, manganese-grafted graphene oxide and activated carbon fibers that adsorb paramagnetic oxygen molecules. Our findings show that the aforementioned distances vary in the range of 2.7-5.4 Å and that the fixation of paramagnetic ions to nanoparticles is most likely implemented by means of the surface functional groups. The nuclear magnetic resonance data data are compared with the results of electron paramagnetic resonance measurements and density functional theory calculations. |
| Databáze: | OpenAIRE |
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