biostudies-literatureBlanco AANational Science Foundation1213https://www.ebi.ac.uk/biostudies/studies/S-EPMC8874602biostudies-literatureUnknown27(4)Compounds that exhibit spin-crossover (SCO) type behavior have been extensively investigated due to their ability to act as molecular switches. Depending on the coordinating ligand, in this case 1H-1,2,4-triazole, and the crystallite size of the SCO compound produced, the energy requirement for the spin state transition can vary. Here, SCO [Fe(Htrz)2(trz)](BF4)] nanoparticles were synthesized using modified reverse micelle methods. Reaction conditions and reagent ratios are strictly controlled to produce nanocubes of 40-50 nm in size. Decreases in energy requirements are seen in both thermal and magnetic transitions for the smaller sized crystallites, where, compared to bulk materials, a decrease of as much as 20 °C can be seen in low to high spin state transitions.Molecules (Basel, Switzerland)Synthesis and Characterization of [Fe(Htrz)2(trz)](BF4)] Nanocubes.PMC8874602CHE-2004178OIA-1757220ECCS-1546650Spinu LAzoulay JDAdams DJBlanco AAWiley JBfalseSynthesis and Characterization of [Fe(Htrz)2(trz)](BF4)] Nanocubes.Compounds that exhibit spin-crossover (SCO) type behavior have been extensively investigated due to their ability to act as molecular switches. Depending on the coordinating ligand, in this case 1H-1,2,4-triazole, and the crystallite size of the SCO compound produced, the energy requirement for the spin state transition can vary. Here, SCO [Fe(Htrz)2(trz)](BF4)] nanoparticles were synthesized using modified reverse micelle methods. Reaction conditions and reagent ratios are strictly controlled to produce nanocubes of 40-50 nm in size. Decreases in energy requirements are seen in both thermal and magnetic transitions for the smaller sized crystallites, where, compared to bulk materials, a decrease of as much as 20 °C can be seen in low to high spin state transitions.2022-01-01T00:00:00Z2022 Feb2025-04-22T01:47:09.54Z2025-04-05T20:06:22.945ZS-EPMC88746023520900010.3390/molecules27041213