Tuneable pressure effects in graphene oxide layers

Yusuke Sekimoto, Ryo Otani, Masaaki Nakamura, Michio Koinuma, Leonard F. Lindoy, Shinya Hayami

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 1/2 ) of [Fe(Htrz) 2 (trz)](BF 4 ) 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 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)](BF 4 ) 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)](BF 4 ) that is present in the composite as larger bulk particles rather than as NPs.

Original languageEnglish
Article number12159
JournalScientific reports
Volume7
Issue number1
DOIs
Publication statusPublished - Dec 1 2017
Externally publishedYes

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Pressure effects
Graphite
Oxides
Nanoparticles
Composite materials
Hydrostatic pressure
Temperature
Monitoring

All Science Journal Classification (ASJC) codes

  • General

Cite this

Sekimoto, Y., Otani, R., Nakamura, M., Koinuma, M., Lindoy, L. F., & Hayami, S. (2017). Tuneable pressure effects in graphene oxide layers. Scientific reports, 7(1), [12159]. https://doi.org/10.1038/s41598-017-12444-x

Tuneable pressure effects in graphene oxide layers. / Sekimoto, Yusuke; Otani, Ryo; Nakamura, Masaaki; Koinuma, Michio; Lindoy, Leonard F.; Hayami, Shinya.

In: Scientific reports, Vol. 7, No. 1, 12159, 01.12.2017.

Research output: Contribution to journalArticle

Sekimoto, Y, Otani, R, Nakamura, M, Koinuma, M, Lindoy, LF & Hayami, S 2017, 'Tuneable pressure effects in graphene oxide layers', Scientific reports, vol. 7, no. 1, 12159. https://doi.org/10.1038/s41598-017-12444-x
Sekimoto Y, Otani R, Nakamura M, Koinuma M, Lindoy LF, Hayami S. Tuneable pressure effects in graphene oxide layers. Scientific reports. 2017 Dec 1;7(1). 12159. https://doi.org/10.1038/s41598-017-12444-x
Sekimoto, Yusuke ; Otani, Ryo ; Nakamura, Masaaki ; Koinuma, Michio ; Lindoy, Leonard F. ; Hayami, Shinya. / Tuneable pressure effects in graphene oxide layers. In: Scientific reports. 2017 ; Vol. 7, No. 1.
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