Effect of ligand substitution in [Fe(H-trz)2(trz)]BF4 spin crossover nanoparticles

Authors

  • Iurii Suleimanov Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (INPT, UPS), 205 Route de Narbonne, 31400, Toulouse, France
  • José Sanchez Costa Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (INPT, UPS), 205 Route de Narbonne, 31400, Toulouse, France
  • Gábor Molnár Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (INPT, UPS), 205 Route de Narbonne, 31400, Toulouse, France
  • Lionel Salmon Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (INPT, UPS), 205 Route de Narbonne, 31400, Toulouse, France
  • Igor Fritsky National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine
  • Azzedine Bousseksou Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (INPT, UPS), 205 Route de Narbonne, 31400, Toulouse, France

DOI:

https://doi.org/10.17721/fujcV3I1P66-72

Keywords:

spin crossover, reverse microemulsions, nanoparticles, ligand substitution

Abstract

Spin crossover iron(II) 1,2,4-triazole-based coordination compounds in the form of nanoparticles were prepared using a reverse microemulsion technique. Ligand substitution approach was applied to decrease the spin crossover temperature towards room temperature in the well-known [Fe(Htrz)2(trz)]BF4 complex. The compositions of the particles were determined by elemental analysis and thermogravimetry. The morphology was monitored by transition electron microscopy (TEM). The effect associated with the ligand substitution was investigated by optical and magnetic measurements. Transition temperature has been reduced by 33 K comparing the unsubstituted sample to that with 5 % substitution.

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Published

2015-03-10

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Vol. 3 No. 1 (2015)

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