Broadband Electron Paramagnetic Resonance of a molecular spin triangle
| Autor: | Athanassios K. Boudalis, Philippe Turek, Jérôme Robert, Matthieu Bailleul |
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| Přispěvatelé: | Institut de Chimie de Strasbourg, Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS]Physics [physics]
Materials science Spectrometer Coplanar waveguide Analytical chemistry Aucun General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Sweep frequency response analysis Spectral line law.invention law Transmission line 0103 physical sciences Physical and Theoretical Chemistry 010306 general physics 0210 nano-technology Spin (physics) Electron paramagnetic resonance Microwave |
| Zdroj: | Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2021, 23 (36), pp.20268-20274. ⟨10.1039/D1CP03295J⟩ |
| ISSN: | 1463-9076 1463-9084 |
| Popis: | International audience; We built a broadband Electron Paramagnetic Resonance (EPR) spectrometer capable of fieldand frequency sweep experiments under field-, microwave amplitude-and microwave frequencymodulation detection modes (HM, AM, and FM, respectively). The spectrometer is based on a coplanar waveguide (CPW) architecture, with the sample being deposited on top of the transmission line. We tested the functionality of this spectrometer by measuring a standard 2,2-diphenyl-1-(2,4,6trinitrophenyl)hydrazyl (DPPH) sample, and complex (N n Bu 4) 2 [Cu 3 (μ 3-Cl) 2 (μ-pz) 3 Cl 3 ] (1), dropcasted on the CPW. Complex 1 had been previously studied by conventional X-band EPR spectroscopy (Chem. Eur. J. 2020, 26, 12769-1784) and comparison with the past studies, validated the functionality of the spectrometer and confirmed the stability of the sample upon deposition. Moreover, our results highlighted the importance of surface effects and of the orientation of the microwave magnetic component B 1 on the lineshapes of the recorded spectra. |
| Databáze: | OpenAIRE |
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