Abstract
Five novel lanthanide (Eu3+, Tb3+, Sm3+, Dy3+, and Gd3+) complexes with 5-nitro-1,10-phenanthroline (phenNO2) have been synthesized and characterized by elemental analysis, IR, UV, and luminescence spectra. The triplet state energy of phenNO2 was determined to be 20,048 cm−1 via the phosphorescence spectra of phenNO2 and its gadolinium complex. The photophysical properties of these complexes indicated that the triplet state energy of the ligand is suitable for the sensitization of the luminescence of Eu3+ and Sm3+, especially the former.
Graphical abstract
5-Nitro-1,10-phenanthroline acts as photon antenna able to transfer energy to Eu(III) ion effectively. Therefore, the intense typical fluorescence of the Eu(III) ions was observed
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The author thanks the New Century “131” Cultivating Plan of Hangzhou City for Outstanding Young Talents for financial support.
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Xu, C. Photophysical properties of lanthanide complexes with 5-nitro-1,10-phenanthroline. Monatsh Chem 141, 631–635 (2010). https://doi.org/10.1007/s00706-010-0308-2
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DOI: https://doi.org/10.1007/s00706-010-0308-2