Light-induced stored information in nanoparticles
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | NEVILLE, Suzanne M. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | ETRILLARD, Céline | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | ASTHANA, Saket | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LETARD, Jean-François | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 1434-1948 | |
| dc.description.abstractEn | We investigate here the consequence on light-induced and thermally induced spin-crossover (SCO) properties with particle size reduction from the macroscopic to microscale to nanoscale domains. Three samples with distinct particle sizes of the SCO coordination polymer [Fe(NCS)<sub>2</sub>(bpe)<sub>2</sub>] [bpe = 1,2-bis(4-pyridyl)ethane] have been prepared by water-in-oil reverse micelle methods. Comparison of the magnetic properties with particle size reduction of these and the original macroscale slow-grown crystals revealed that the spin transition becomes more gradual, more incomplete and concomitantly the transition temperature (<i>T</i><sub>1/2</sub>) decreases - much like what is observed in metal dilution studies. Importantly, here, in the first photoinduced magnetic studies on a nanoparticle SCO system, we see that even on the nanoscale photoconversion of the low spin species to a metastable high-spin state is possible. Furthermore, particle size reduction appears to have little effect on the temperature at which the stored photomagnetic information is erased. These results highlight that light-induced SCO properties are governed by direct metal coordination environment (i.e., on the molecular scale), whereas, thermally induced magnetic properties rely more on crystal packing and ligand field effects. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-VCH Verlag | |
| dc.subject.en | Spin crossover | |
| dc.subject.en | Photomagnetism | |
| dc.subject.en | Nanoparticles | |
| dc.subject.en | Coordination polymers | |
| dc.subject.en | Magnetic properties | |
| dc.title.en | Light-induced stored information in nanoparticles | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/ejic.200900937 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | European Journal of Inorganic Chemistry | |
| bordeaux.page | 282-288 | |
| bordeaux.issue | 2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00463242 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00463242v1 | |
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