An EXAFS study of phenanthroline-holmium complex
Autor: | Mohammad Agha Bolorizadeh, Javad Rahighi, Abdolhamed Shahedi |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Extended X-ray absorption fine structure Coordination number Phenanthroline chemistry.chemical_element Infrared spectroscopy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Spectral line 0104 chemical sciences Crystallography chemistry.chemical_compound chemistry Absorption (logic) 0210 nano-technology Holmium Spectroscopy |
Zdroj: | The European Physical Journal D. 75 |
ISSN: | 1434-6079 1434-6060 |
Popis: | A holmium complex, $$[\hbox {Ho}(\hbox {phen})_{\mathrm {2}}(\hbox {H}_{\mathrm {2}}$$ O) $$_{\mathrm {2}} (\hbox {Cl})_{\mathrm {2}}$$ ]Cl.H $$_{\mathrm {2}}$$ O, as a luminescent/bio probe has been made and characterized using extended X-ray absorption fine structure (EXAFS) as well as IR spectroscopy, UV-Vis spectroscopy, and elemental analysis. Structural data of the formed Ho(III)–phen species are determined from the Ho $$L_{\mathrm {III}}$$ -edge EXAFS spectra as well as its $$k^{\mathrm {2}}$$ -weighted and $$k^{\mathrm {3}}$$ -weighted spectra. The coordination numbers and distances between the holmium and the first shell atoms, i.e., O, N, and Cl, are measured. The EXAFS spectra are also analyzed by Fourier transform of the normalized absorption coefficient into the molecular distance coordinates to further verify the determined Ho(III) structural model. |
Databáze: | OpenAIRE |
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