A family of discrete magnetaically switchable nanoballs
| Autor: | Boujemaa Moubaraki, Cameron J. Kepert, Chérif Baldé, Martin Duriska, Stuart Robert Batten, Suzanne M. Neville, Keith S. Murray, Jean-François Létard |
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| Přispěvatelé: | School of Chemistry, Monash University [Clayton], Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Laboratoire de Chimie et Physique des Matériaux (LCPM), Université Assane SECK de Ziguinchor (UASZ), The University of Sydney |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Thiocyanate
Spin states 010405 organic chemistry Transition temperature Iron General Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 010402 general chemistry Block (periodic table) Spin crossover 01 natural sciences LIESST 0104 chemical sciences chemistry.chemical_compound Crystallography Nuclear magnetic resonance chemistry Supramolecules Excited state Nano Discrete |
| Zdroj: | ChemPlusChem ChemPlusChem, Wiley, 2012, 77 (8), pp.616-623. ⟨10.1002/cplu.201200123⟩ |
| ISSN: | 2192-6506 |
| DOI: | 10.1002/cplu.201200123⟩ |
| Popis: | The thermal and light-induced magnetic properties of a family of discrete magnetically switchable 'nanoball' species (3 nm in diameter) is reported. The self-assembly of these materials is accomplished by the use of the metallo building block, [Cu([Tp{sup 4-py}])(NCCH{sub 3})] ([Tp{sup 4-py}]=tris-[3-(4{prime}-pyridyl)pyrazol-1-yl]hydroborate), combined with a [Fe(NCX){sub 2}] (X = S, Se and BH{sub 3}) species. We previously showed that the thiocyanate analogue (Fe(NCS)-nano) undergoes a thermal and light-induced spin crossover (SCO) - the largest such discrete SCO material reported. Now included in this family are the Se and BH{sub 3} analogues, Fe(NCSe)-nano and Fe(NCBH{sub 3})-nano, which show increased thermal transition temperatures (T{sub 1/2} = 124 K, 162 and 173 K). This variation in transition temperature over the series S < Se < BH{sub 3} results in diverse photomagnetic properties, such that the light-induced excited spin state trapping (LIESST) effect is exhibited to varying degrees and at different temperatures by the S, Se and BH{sub 3} analogues. |
| Databáze: | OpenAIRE |
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