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Solid Phase Luminescence and Thermal Transformations of Palladium(II) Complexes with 3-(2-Pyridyl)-1,2,4-Triazoles

The thermal behavior and luminescent properties of palladium(II) Pd(LR)2 complexes with 3-(2-pyridyl)-5-R-1,2,4-triazoles (LR , where R = H, Ph, Me) in cristalline state were studied. Analysis of the stationary and time-resolved Pd(LMe)2 photoluminescence spectra showed that the introduction of electron–donor methyl substituent into a coordinated ligand is accompanied by emission in the green range of the spectrum (fluorescence, λmax = 442 nm). Molecule aggregation in Pd(LH)2 and Pd(LPh)2 complexes leads to a bathochromic shift of emission (phosphorescence, 𝜆max = 712 and 691 nm).

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Correspondence to B. V. Zakharchenko.

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Translated from Teoretychna ta Eksperymentalna Khimiya, Vol. 57, No. 5, pp. 307-313, September-October, 2021.

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Zakharchenko, B.V., Khomenko, D.M., Doroshchuk, R.O. et al. Solid Phase Luminescence and Thermal Transformations of Palladium(II) Complexes with 3-(2-Pyridyl)-1,2,4-Triazoles. Theor Exp Chem 57, 358–365 (2021). https://doi.org/10.1007/s11237-021-09705-2

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  • DOI: https://doi.org/10.1007/s11237-021-09705-2

Keywords

  • 1,2,4-triazoles
  • palladium(II) coordination compounds
  • luminescent properties
  • CVD precursors
  • X-ray diffraction analysis