Molecular orientation and film morphology of pentacene on native silicon oxide surface

Article Abstract:

A study on the growth morphology and mechanism of pentacene films on native Si oxide surface using high-resolution electron energy loss spectroscopy (HREELS), X-ray diffraction (XRD), and atomic force microscopy (AFM) is presented. The HREELS result reveals that a substantial portion of the first two layers of pentacene molecules are titled-standing or randomly oriented, whereas the upper-layer molecules are mostly lying flat to the substrate.

Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Pentanes, X-rays, X-ray diffraction, Optical properties, Atomic force microscopy, Pentane

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Polymer-functionalized carbon nanotubes investigated by solid-state nuclear magnetic resonance and scanning tunneling microscopy

Article Abstract:

Novel sidewall-modified carbon nanotubes functionalized with polymers, such as poly(methylmethacrylate) (PMMA) is prepared to gain control on electrical and mechanical properties of nanocomposites on the molecular level. Utility of solid-state nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM) to study the interaction of the carbon nanotube and the polymer is presented.

Electric properties, Acrylates

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Fabrication and characterization of pure and well-aligned carbon nanotubes using methane/nitrogen-ammonia plasma

Article Abstract:

The well-aligned multiwalled carbon nanotubes (CNTs) were grown by microwave plasma-enhanced chemical vapor deposition using N2 and NH3 as the carrier gases and CH4 as the carbon source. The scanning electron microscopy revealed that the CNTs grew via the base growth mechanism at a rate of ~100 nm/s.

Nitrogenous Fertilizer Manufacturing, Nitrogenous fertilizers, Ammonia, Carbon compounds

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