Luminescence thermometry and field induced slow magnetic relaxation based on a near infrared emissive heterometallic complex

Abstract

The 1:1:1 reaction of YbCl3·6H2O, K3[Co(CN)6] and bpyO2 in H2O has provided access to a complex with formula [YbCo(CN)6(bpyO2)2(H2O)3]·4H2O (1) in a very good yield while its structure has been...

Synthesis and Characterization of Lanthanide Metal Ion Complexes of New Polydentate Hydrazone Schiff Base Ligand

“…The solids were filtered off and dried in air. For the purpose of elemental analysis, the precipitates were dried under vacuum for 72 h in order to remove the solvent molecules [ 40 , 41 ]. The complexes obtained are microcrystalline variously colored powders, whose melting points (decomposition) are higher than that of the free ligand.…”

“…Observed structural changes are characterized by a slight modification of the number of non-coordinated solvent molecules [ 42 , 43 , 44 ]. For the luminescence and UV-Vis studies, single crystals of the product were used [ 41 ].…”

CO2 Fixation by Dimeric Tb(III) Complexes: Synthesis, Structure, and Magnetism

“…Furthermore, multifunctional molecular materials have attracted attention due to the possibility to exploit different cooperative physical properties in a single entity. In this regard, 4f-SMMs have been shown to possess two or more physical properties − allowing even the observation of cooperative effects …”

Luminescence thermometry in a Dy4 single molecule magnet

“…One way to overcome this impasse is to build microdevices with materials capable of also acting as in situ thermometers. In this sense, there are some very recent publications that try to provide solutions for the measurement of temperature in molecular magnets, making use of luminescent thermometry, [7][8][9][10][11][12][13][14][15][16][17] and some of the achievements were summarised by Murugesu and colaborators. 18 Among these works, most studies have been carried out with homodinuclear compounds of Dy III , 7b Tb III , 7c or Yb III .…”

“…18 Among these works, most studies have been carried out with homodinuclear compounds of Dy III , 7b Tb III , 7c or Yb III . 7a However, some examples of heteronuclear Yb III Co III , 9,14 Dy III Co III , 15 or Ho III M III (M = Co, Rh or Ir) compounds 16 have also been described, in addition to some mononuclear complexes. Thus, some of us have published the first mononuclear Yb III compound with slow relaxation of magnetization and luminescent thermometry, 10 which currently accompanies other two complexes of the same metal.…”