Journal
DALTON TRANSACTIONS
Volume 41, Issue 13, Pages 3726-3730Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt12037b
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Funding
- ERA-net Chemistry
- Swiss National Science Foundation
- Alfred Werner Foundation
- European Research Council [StG 208561]
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Spin crossover requires cooperative behavior of the metal centers in order to become useful for devices. While cooperativity is barely predictable in solids, we show here that solution processing and the covalent introduction of molecular recognition sites allows the spin crossover of iron(III) sal(2)trien complexes to be rationally tuned. A simple correlation between the number of molecular recognition sites and the spin crossover temperature enabled the fabrication of materials that are magnetically bistable at room temperature. The predictable behavior relies on combining function (spin switching) and structure (supramolecular assembly) through covalent interactions in a single molecular building block.
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