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Highly Luminescent Lanthanide Complexes with Specific Coordination Structures pp 81–88Cite as

Solvent-Dependent Luminescence of Octa-Coordinated Eu(III) Complexes

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Abstract

Solvent-dependent luminescence of Eu(III) complexes composed of oxo-linked bidentate phosphine oxide ligands, 4,5-bis(diphenylphosphoryl)-9,9-dimethylxanthene (xantpo), 4,5-bis(di-tert-butylphosphoryl)-9,9-dimethylxanthene (tBu-xantpo) and low-vibrational frequency hexafluoroacety-lacetonato (hfa) ligands is reported. The Eu(III) complexes, Eu(hfa)2(xantpo)2 and Eu(hfa)3(tBu-xantpo), exhibit octa-coordinated square antiprism and trigonal dodecahedron structure, respectively. Their emission quantum yield, emission lifetime, and radiative and non-radiative rate constant are characterized using acetone, acetone-d 6, toluene, chloroform, and DMF. The relationship between photophysical properties and coordination structures of octa-coordinated Eu(III) complexes is discussed for the first time.

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Authors and Affiliations

  1. ADEKA Corporation, Tokyo, Japan

    Kohei Miyata

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  1. Kohei Miyata
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Correspondence to Kohei Miyata .

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Miyata, K. (2014). Solvent-Dependent Luminescence of Octa-Coordinated Eu(III) Complexes. In: Highly Luminescent Lanthanide Complexes with Specific Coordination Structures. Springer Theses. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54944-4_6

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