Synthesis of Iron-Fullerene Complexes by Scattering of C₆₀ Ions on Ferrocenyl-Undecanethiol SAM Surfaces

Abstract

In this study, we performed a mass-spectrometric study of cluster ions scattered on glass surfaces covered with ferrocene molecules under the incidence of 4.8 keV-C q+ 60 (q = 1 and 2) ions. A couple of optical flats covered with 11-ferrocenyl-1-undecanethiol self-assembled monolayer surfaces (Fc-thiol-SAMs) faced each other with a shape called a tapered planar channel (TPC) and C60 ions entered the wider opening gap. The mass and charge of each ion exiting from the narrower gap of the TPC were successfully analyzed using time-of-flight mass spectrometry combined with the parallel plate charge separation method. When the TPC was tilted by 2 • with respect to the C60 ion beam axis, the mass distribution peak shifted to ∼730 u. Furthermore, we conducted an elemental analysis of the scattered particles deposited on a Si substrate by inductively coupled plasma mass spectrometry. A significant increase in the amount of iron atoms was confirmed for the deposited substrate, as compared with non-deposited substrates.

Guiding a 7.5 keV Ar3+ ion beam using a cylindrical glass channel

“…However, the thin blue spots that appeared at the same place far from the origin were scattered Ar 2+ ion beams that had captured an electron from the cylindrical glass surfaces owing to charge-exchange collisions. 5,28,32) Figures 8(a)-8(g) show the X distributions of the transmitted ions through the CGC at various tilt angles. The origin of the X-axis was reset at the peak of the distribution, (d) θ = 0°.…”

“…Because details of the CGC and the experimental method have been described elsewhere, [26][27][28] only a brief explanation will be given here. The cylindrical glasses are optical borosilicate glass (BK7) lenses with a common curvature of 155.7 mm and a focal length of 300 mm for green light.…”

“…Figure 2 shows a schematic illustration of the experimental setup 28) used in this study. The time-of-flight, T, and displacement, Y, of each transmitted ion were measured by a wedge and strip type of position-sensitive ion detector 29) with a microchannel plate (MCP-PSD) event by event when the pulsed 7.5 keV Ar 3+ ion beam entered the hole (diameter of 1.5 mm) of the CGC.…”