Journal
SCIENTIFIC REPORTS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-12444-x
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Funding
- KAKENHI [JP17H01200]
- JSPS [JP15K17833, JP16H00777, JP17H05485]
- Cooperative Research Program of 'Network Joint Research Centre for Materials and Devices'
- Kyushu Synchrotron Light Research Center [1606042F]
- Grants-in-Aid for Scientific Research [17H05485, 15K17833, 16H00777, 17H01200] Funding Source: KAKEN
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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-1/2) of [Fe(Htrz)(2)(trz)](BF4) 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 angstrom (for GO) to 3.50 angstrom (for rGO) as the temperature employed for the thermal reduction treatments of the GO-NP composites is increased. At the same time, T-1/2 increases from 351 K to 362 K along the series. This T-1/2 increment of 11 K corresponds to that observed for pristine [Fe(Htrz)(2)(trz)](BF4) 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-1/2 for [Fe(Htrz)(2)(trz)](BF4) that is present in the composite as larger bulk particles rather than as NPs.
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