Formation and naphthoyl derivatization of aromatic aminosilane self-assembled monolayers: characterization by atomic force microscopy and ultraviolet spectroscopy

Spectroscopic characterization of self-assembled organosilane monolayer films

“…This morphology is in good agreement with observations using the atomic force microscope. 11 Contrastingly, a different morphology was observed on the older specimen. Also, the STM was incapable of imaging the ''old'' film when operated at positive tip biases.…”

Synthesis, Characterization, and Fluorescence Properties of Mixed Molecular Multilayer Films of BODIPY and Zn(II) Tetraphenylporphyrins

“…37 Difference absorbance spectra of the mixed ZnTPEP-N3BODIPY multilayer films from ZnTPEP films alone reveal the absorbance profile of N3BODIPY in the films is nearly the same shape and width as N3BODIPY in solution (Error! Reference source not found.).…”

Nanofabrication with proximal probes

“…Hydrogen substituents on the silane (the "X" part) are most commonly methoxy groups (CH O), Cl, or a mixture of the two. The composition of the surface binding part strongly affects film ordering [52], the tendency of the film to grow multilayers [53], and, to a lesser extent, the packing density [54]. A thiol (RSH) forms highly ordered layers on surfaces of GaAs [55] or Au [56].…”

“…After cleaning and hydrogen passivation in dilute HF, the wafer sample is immersed briefly in a solution of the monomer, removed, and dried on a hot plate. The resulting film thickness is on the order of 1-1.3 nm [52]. After STM patterning (and ligand grafting, in the case of certain films [60]) the sample is immersed in the colloidal Pd, which selectively ligates onto the unexposed film forming a layer another 2.6 nm thick [68].…”

“…In other words, a smaller dose is needed to expose a given area. For example, the molecular density of a PEDA film is 5 nm [52]. In comparison, the density of hydrogen atoms on a passivated Si(100) surface is about 6.8 nm .…”