A near-infra-red emitting manganese(II) complex with a pyrimidine-based ligand

Katerina A. Vinogradova, Nikita A. Shekhovtsov, Alexey S. Berezin, Taisiya S. Sukhikh, Viktor P. Krivopalov, Elena B. Nikolaenkova, Igor V. Plokhikh, Mark B. Bushuev

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1 Citation (Scopus)

Abstract

A polymeric manganese(II) complex, [MnL2Cl2]n (L = 2-amino-4-methylpyrimidine) has been synthesized by the reaction between MnCl2·4H2O and L in the 1:1 and 1:2 metal-to-ligand molar ratios. The Mn2+ ions adopt distorted octahedral environment formed by four Cl ligands and two N1 atoms of the pyrimidine rings of two L molecules. The chlorido-ligands adopt a μ2-bridging coordination mode linking manganese atoms into the polymeric chain. The free ligand L shows excitation-wavelength-dependent emission originating from the π-π* and n-π* excited states with nanosecond lifetimes in the blue region of the spectrum. The complex [MnL2Cl2]n demonstrates photoluminescence with the maximum in the near-infrared region (λmax = 740 nm, φ = 1.7%) with microsecond lifetimes (τ = 124 μs).

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalInorganic Chemistry Communications
Volume100
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • RAY CRYSTAL-STRUCTURE
  • 2-AMINO-4-METHYLPYRIMIDINE SYNTHESIS
  • EMISSION
  • LUMINESCENCE
  • NANOPARTICLES
  • TEMPERATURE
  • CONVERSION

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