Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature
Spin crossover (SCO) iron (II) coordination compounds in the form of nanohybrid SCO@SiO<sub>2</sub> particles were prepared using a reverse micelles technique based on the TritonX-100/cyclohexane/water ternary system. Tetraethyl orthosilicate (TEOS) acts as precursor of both the SiF<s...
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MDPI AG
2025-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/2/90 |
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| author | Xinyu Yang Rafal Bielas Vincent Collière Lionel Salmon Azzedine Bousseksou |
| author_facet | Xinyu Yang Rafal Bielas Vincent Collière Lionel Salmon Azzedine Bousseksou |
| author_sort | Xinyu Yang |
| collection | DOAJ |
| description | Spin crossover (SCO) iron (II) coordination compounds in the form of nanohybrid SCO@SiO<sub>2</sub> particles were prepared using a reverse micelles technique based on the TritonX-100/cyclohexane/water ternary system. Tetraethyl orthosilicate (TEOS) acts as precursor of both the SiF<sub>6</sub><sup>2−</sup> counter-anion and SiO<sub>2</sub> to obtain Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> nanoparticles with different sizes and morphologies while modifying the TEOS concentration and reaction time. The adjustable mixed-anion strategy leads to a range of quite scarce abrupt spin crossover behaviors with hysteresis just above room temperature (ca. 293 K), which is very promising for the integration of these materials into functional devices. |
| format | Article |
| id | doaj-art-46273ca1158c4cb0bce2ca375f7a0d9a |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-46273ca1158c4cb0bce2ca375f7a0d9a2025-01-24T13:44:06ZengMDPI AGNanomaterials2079-49912025-01-011529010.3390/nano15020090Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room TemperatureXinyu Yang0Rafal Bielas1Vincent Collière2Lionel Salmon3Azzedine Bousseksou4Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, FranceLaboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, FranceLaboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, FranceLaboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, FranceLaboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, FranceSpin crossover (SCO) iron (II) coordination compounds in the form of nanohybrid SCO@SiO<sub>2</sub> particles were prepared using a reverse micelles technique based on the TritonX-100/cyclohexane/water ternary system. Tetraethyl orthosilicate (TEOS) acts as precursor of both the SiF<sub>6</sub><sup>2−</sup> counter-anion and SiO<sub>2</sub> to obtain Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> nanoparticles with different sizes and morphologies while modifying the TEOS concentration and reaction time. The adjustable mixed-anion strategy leads to a range of quite scarce abrupt spin crossover behaviors with hysteresis just above room temperature (ca. 293 K), which is very promising for the integration of these materials into functional devices.https://www.mdpi.com/2079-4991/15/2/90spin crossoveriron(II)triazolereverse micellesnanoparticles |
| spellingShingle | Xinyu Yang Rafal Bielas Vincent Collière Lionel Salmon Azzedine Bousseksou Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature Nanomaterials spin crossover iron(II) triazole reverse micelles nanoparticles |
| title | Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature |
| title_full | Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature |
| title_fullStr | Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature |
| title_full_unstemmed | Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature |
| title_short | Various Sizes and Shapes of Mixed-Anion Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2−x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature |
| title_sort | various sizes and shapes of mixed anion fe nh sub 2 sub trz sub 3 sub bf sub 4 sub sub 2 x sub sif sub 6 sub sub x 2 sub sio sub 2 sub nanohybrid particles undergoing spin crossover just above room temperature |
| topic | spin crossover iron(II) triazole reverse micelles nanoparticles |
| url | https://www.mdpi.com/2079-4991/15/2/90 |
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