Thermal conversion of [Fe(phen) 3 ](SCN) 2 thin films into the spin crossover complex Fe(phen) 2 (NCS) 2 3

Articles you may be interested inX-ray photoelectron spectroscopy study on the chemistry involved in tin oxide film growth during chemical vapor deposition processes J. Vac. Sci. Technol. A 31, 01A105 (2013); 10.1116/1.4756898 New insight brought by density functional theory on the chemical state of alaninol on Cu(100): Energetics and interpretation of x-ray photoelectron spectroscopy data J. Chem. Phys. 128, 114709 (2008); 10.1063/1.2888562 X-ray photoelectron spectroscopy study of self-assembled monolayers of alkanethiols on (001) GaAs Novel cyanoterphenyl self-assembly monolayers on Au(111) studied by ellipsometry, x-ray photoelectron spectroscopy, and vibrational spectroscopies J. Chem. Phys. 122, 224707 (2005); 10.1063/1.1893618 1-octadecene monolayers on Si(111) hydrogen-terminated surfaces: Effect of substrate dopingA series of para-substituted, halogenated (F, Cl, Br, and I) benzoic acid monolayers were prepared on the native oxide of aluminum surfaces by solution self-assembly and spin-coating techniques. The monolayers were characterized by x-ray photoelectron spectroscopy (XPS) and water contact angles. Several general trends are apparent. First, the polarity of the solvent is critical to monolayer formation. Protic polar solvents produced low coverage monolayers; in contrast, nonpolar solvents produced higher coverage monolayers. Second, solution deposition yields a higher surface coverage than spin coating. Third, the thickness of the monolayers determined from XPS suggests the plane of the aromatic ring is perpendicular to the surface with the carboxylate functional group most likely binding in a bidentate chelating geometry. Fourth, the saturation coverage ($2.7 Â 10 14 molecules cm À2 ) is independent of the para-substituent.

The electronic, magnetic, and structural properties of Ni80Fe20 and Co electrodes at LiF and aluminum tris(8-hydroxyquinoline), or Alq3, interfaces were investigated with photoemission spectroscopy and polarized neutron reflectivity measurements. When LiF was deposited onto Ni80Fe20 films and Co was deposited onto thin LiF layers, the work function of both metals decreased. Polarized neutron reflectivity measurements were used to probe the buried interfaces of multilayers resembling a spin-valve structure. The results indicate that LiF is an effective barrier layer to block diffusion of Co into the Alq3 film. X-ray absorption spectra at the fluorine K edge indicate that no chemical reactions occur between Co and LiF. Despite these positive effects derived from the LiF tunnel barriers, there was no magnetoresistance in spin valves when the Alq3 layer was greater than 50 nm.

A series of large-ring polybenzocrown ethers is prepared by cesium-assisted cyclizations. Reactions of diphenols/bisphenols, dimesylates of oligoethylene glycols and cesium carbonate in MeCN produce the large-ring polybenzocrown ethers in high yields. To gain further insight into the structures of these compounds, solid-state structures of three large-ring crown ethers are obtained by X-ray diffraction.