Unexpected luminescent and photochemical properties of europium(III) cinnamates - Theoretical and experimental study.

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ID: 27246
2019
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Abstract
The luminescent and photochemical properties of europium(III) cinnamates [Eu(Cin)] (I) and Eu(Cin)·(phen) (II) were investigated in theoretical and experimental aspects. The high photostability of the complex I was explained. The complex II displays weak luminescence and low photostability in spite of the presence of a powerful antenna ligand 1,10-phenantroline in its coordination sphere. The unexpected luminescent and photochemical properties of europium(III) cinnamates were interpreted by the quantum chemistry methods. It was revealed that inclusion of phen molecule into Eu(Cin) complex results in lengthening of Eu-Cin distances that promotes weakening of antenna effect. In the process of photoexcitation of this complex noticeable lengthening of Eu-Cin-2 bond takes place and Cin-3 ligand is detached from the molecule that is the cause of low photostability and weak luminescence of II.
Reference Key
emelina2019unexpectedspectrochimica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Emelina, Tatyana;Zadoroznaya, Anna;Kalinovskaya, Irina;Mirochnik, Anatolii;
Journal spectrochimica acta part a, molecular and biomolecular spectroscopy
Year 2019
DOI
S1386-1425(19)30871-6
URL
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