Light-Induced Changes in Magnetism in a Coordination Polymer Heterostructure, RbCo[Fe(CN)]@KCo[Cr(CN)]·nHO and the Role of the Shell Thickness on the Properties of Both Core and Shell
Particles of formula RbCo[Fe(CN)]@KCo[Cr(CN)]·nHO with a light-responsive rubidium cobalt hexacyanoferrate (RbCoFe) core and a magnetic potassium cobalt hexacyanochromate (KCoCr) shell have been prepared and exhibit light-induced changes in the magnetization of the normally light-insensitive KCoCr s...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 44; pp. 15660 - 15670 |
|---|---|
| Autores principales: | , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
11/5/2014
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=99719935&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 99719935 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 11/5/2014 vid: 136 iid: 44 pid: 997 pub: American Chemical Society artinfo: ui: 99719935 10.1021/ja5084283 ppf: 15660 ppct: 10 formats: tig: atl: Light-Induced Changes in Magnetism in a Coordination Polymer Heterostructure, RbCo[Fe(CN)]@KCo[Cr(CN)]·nHO and the Role of the Shell Thickness on the Properties of Both Core and Shell aug: au: Risset, Olivia N. Quintero, Pedro A. Brinzari, Tatiana V. Andrus, Matthew J. Lufaso, Michael W. Meisel, Mark W. Talham, Daniel R. affil: Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States Department of Physics and the National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611-8440, United States Department of Chemistry, University of North Florida, Jacksonville, Florida 32224-7699, United States su: Magnetism Potassium compounds Alkali metal compounds Chemical reactions X-ray diffraction sug: subj: Magnetism Potassium compounds Alkali metal compounds Chemical reactions X-ray diffraction ab: Particles of formula RbCo[Fe(CN)]@KCo[Cr(CN)]·nHO with a light-responsive rubidium cobalt hexacyanoferrate (RbCoFe) core and a magnetic potassium cobalt hexacyanochromate (KCoCr) shell have been prepared and exhibit light-induced changes in the magnetization of the normally light-insensitive KCoCr shell, a new property resulting from the synergy between the core and shell of a coordination polymer heterostructure. A single batch of 135 ± 12 nm RbCoFe particles are used as seeds to generate three different core@shell samples, with KCoCr shell thicknesses of approximately 11, 23 and 37 nm, to probe the influence of the shell thickness over the particles' morphology and structural and magnetic properties. Synchrotron powder X-ray diffraction reveals that structural changes in the shell accompany the charge transfer induced spin transition (CTIST) of the core, giving direct evidence that the photomagnetic response of the shell is magnetomechanical in origin. The depth to which the KCoCr shell contributes to changes in magnetization is estimated to be approximately 24 nm when using a model that assumes a constant magnetic response of the core within the series of particles. In turn, the presence of the shell changes the nature of the CTIST of the core. As opposed to the usually observed first order transition exhibiting hysteresis, the CTIST becomes continuous in the core@shell particles. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
|---|