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Tuneable pressure effects in graphene oxide layers.
- Source :
-
Scientific reports [Sci Rep] 2017 Sep 22; Vol. 7 (1), pp. 12159. Date of Electronic Publication: 2017 Sep 22. - Publication Year :
- 2017
-
Abstract
- Tuneable pressure effects associated with changing interlayer distances in two-dimensional graphene oxide (GO)/reduced GO (rGO) layers are demonstrated through monitoring the changes in the spin-crossover (SCO) temperature (T <subscript>1/2</subscript> ) of [Fe(Htrz) <subscript>2</subscript> (trz)](BF <subscript>4</subscript> ) nanoparticles (NPs) incorporated in the interlayer spaces of the GO/rGO layers. The interlayer separation along the GO to GO/rGO-NP composites to rGO series decreases smoothly from 9.00 Å (for GO) to 3.50 Å (for rGO) as the temperature employed for the thermal reduction treatments of the GO-NP composites is increased. At the same time, T <subscript>1/2</subscript> increases from 351 K to 362 K along the series. This T <subscript>1/2</subscript> increment of 11 K corresponds to that observed for pristine [Fe(Htrz) <subscript>2</subscript> (trz)](BF <subscript>4</subscript> ) NPs under a hydrostatic pressure of 38 MPa. The influence of the stacked layer structures on the pseudo-pressure effects has been further probed by investigating the differences in T <subscript>1/2</subscript> for [Fe(Htrz) <subscript>2</subscript> (trz)](BF <subscript>4</subscript> ) that is present in the composite as larger bulk particles rather than as NPs.
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 7
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 28939840
- Full Text :
- https://doi.org/10.1038/s41598-017-12444-x