Structural characterization of multilayer metal phosphonate film on silicon using angular-dependent x-ray photoelectron spectroscopy

Abstract

A trilayered film of (Hf, Y, Zr) 1,10-decanebisphosphonate was grown on Si wafer and characterized by variable angle take-off x-ray photoelectron spectroscopy. The angular dependence of the metal intensities is consistent with a sequentially layered arrangement with no intermixing of the metal ions. This implies that the C10 alkyl chains are fully extended and stacked in an ordered layered structure. The angular dependence of the Si 2p electrons (1150 eV) yields a mean free path of 315 ± 80 Å.

Phosphine Oxide Monolayers on SiO2 Surfaces

“…[1][2][3][4] Furthermore, surface chemistry is a valuable tool in the context of semiconducting materials. [5,6] To date, the studies of monolayer formation of phosphonates have mainly focused on phosphonic acids.…”

Analytical Applications of Silica-Modified Electrodes -A Comprehensive Review

“…Various inorganic matrices have been used as the modifying agent of conventional electrodes. They include metal oxides [31][32][33], metal phtalocyanines and porphyrins [34][35][36][37][38], Prussian Blue films and related transition metal cyanides [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54], phosphates and phosphonates [55][56][57], g-alumina [58], silica gels [59][60][61], fumed silica [62,63] or other oxides obtained by the solgel process [64,65], clays [66][67][68][69][70][71] or layered double hydroxides [72][73][74][75], and zeolites [69,[76][77]…”

Understanding Molecular Interactions within Chemically Selective Layered Polymer Assemblies

“…ventional ionic zirconium bisphosphonate (ZP) interlayer linking chemistry, [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] where the phosphonates are sequestered by metal ion complex formation, we use the side groups of these polymer multilayers in their deprotected form 35,36 as active sites for metal ion uptake (Figure 3). 29 Covalent interlayer attachment is accomplished using adipoyl chloride.…”

“…The growth of layered assemblies using ionic interlayer linking chemistry is well established. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] While broadly useful, there are some instances where this chemistry is not ideal. To overcome this limitation, we have demonstrated covalent linking chemistry that achieves controlled layer growth using an efficient polymerization reaction (Fig.…”

“…[22][23][24][25][26][27][28] It is often difficult to quantitate the strength of the ZP bond because the equilibrium for bond formation lies far to the right, but indirect estimates indicate that it is ca. 60 kcal/mol or more under favorable conditions.…”