Journal article

Publication year: 2024

Journal: European Journal of Inorganic Chemistry

Volume number: 27

Issue number: 17

ISSN: 1434-1948

eISSN: 1099-0682

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/ejic.202400078

Publisher: Wiley-VCH Verlag

Abstract: 
This study is focused on determining the refractive index as a crucial parameter for evaluating the intrinsic quantum yield and the ligand sensitisation efficiency in solid-state trivalent lanthanide coordination compounds. For this, eight trivalent europium complexes with phenyl-terpyridine ([EuX3(ptpy)(L)], X=Cl- or NO3-, ptpy=4 '-phenyl-2,2 ' : 6 ',2 ''-terpyridine, L=H2O or other molecules) were examined. Their refractive indices were determined using the Becke lines test by immersing transparent material in a series of media with known refractive indices. Using the set of media presented here, determining crystalline materials ' refractive indices from 1.41 to 1.73 with a step of 0.01 is possible. Assessment of the refractive indices of the complexes mentioned above allowed a comprehensive analysis of their photophysical properties in the solid state. Moreover, this method can be extrapolated for other solid-state materials, offering valuable insights in the broader field of photophysics. In addition to photoluminescence investigations, the compounds presented were characterised by single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), Hirschfeld surface area analysis, UV-Vis reflectance spectroscopy, hydrolysis sensitivity analysis, and simultaneous thermogravimetry and differential thermal analysis coupled with mass-spectrometry (STA-MS).

Harvard Citation style: Sedykh, A., Maxeiner, M., Seuffert, M., Heuler, D., Kurth, D. and Mueller-Buschbaum, K. (2024) Enhancing the Analysis of Eu³⁺ Photoluminescence in Coordination Compounds in the Solid State by Determining their Refractive Index, European Journal of Inorganic Chemistry, 27(17). https://doi.org/10.1002/ejic.202400078

APA Citation style: Sedykh, A., Maxeiner, M., Seuffert, M., Heuler, D., Kurth, D., & Mueller-Buschbaum, K. (2024). Enhancing the Analysis of Eu³⁺ Photoluminescence in Coordination Compounds in the Solid State by Determining their Refractive Index. European Journal of Inorganic Chemistry. 27(17). https://doi.org/10.1002/ejic.202400078