▎ 摘　　要

This research highlights the pressure effects with the particle size dependency incorporated in two-dimensional graphene oxide (GO)/reduced graphene oxide (rGO). GO and rGO composites employing nanorods (NRs) of type [Fe(Htrz)(2)(trz)](BF4) have been prepared, and their pressure effects in the interlayer spaces through observing the changes of the spin crossover (SCO) temperature (T-1/2) have been discussed. The composites show the decrease of interlayer spaces from 8.7 angstrom to 3.5 angstrom that is associated with GO to rGO transformation. The shorter interlayer spaces were induced by pressure effects, resulting in the increment of T-1/2 from 357 K to 364 K. The pressure effects in the interlayers spaces estimated from the T-1/2 value correspond to 24 MPa in pristine [Fe(Htrz)(2)(trz)](BF4) NRs under hydrostatic pressure. The pressure observed in the composites incorporating NRs (30 x 200 nm) is smaller than that observed in the composite incorporating nanoparticles (NPs) (30 nm). These results clearly demonstrated that the incorporated particle size and shape influenced the pressure effects between the GO/rGO layer.