Surface state analysis of photobrightening in CdSe nanocrystal thin films

Article Abstract:

The changes in surface state of tri-n-octylphosphine oxide (TOPO) capped CdSe nanocrystals before and after the irradiation of blue light by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) is reported. The change in adsorption state of TOPO such as the TOPO-Se complex and TOPO dimer during the illumination is deeply correlated with photobritening.

Industrial inorganic chemicals, not elsewhere classified, Cadmium Compounds, Optical properties, Structure

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Covalent assembly of stilbene-based monolayers: Factors controlling molecular interactions

Article Abstract:

A new series of stilbene-based chromophores were used to prepare structurally related siloxane-based monolayers in order to determine the factors controlling the intermolecular chromophore-chromophore interactions in the solid state. The covalently bound monolayers exhibited a relatively high concentration of surface-bound chromophores, which were restricted in their orientation freedom.

Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Silicon & Inorganic Compounds, Pyridine, Monomolecular films, Silicon compounds

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Mechanism of Pb adsorption to fatty acid Langmuir monolayers studied by X-ray absorption fine structure spectroscopy

Article Abstract:

New structural and chemical information about adsorbed lead (Pb) atoms is presented. A binding mechanism for Pb as a polynuclear hydrolysis complex is proposed.

Lead, Mechanical properties, Atomic properties

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