Origin of the photoinduced optical second harmonic generation arising in N-phenyl microcrystalline films

Article Abstract:

Optical second harmonic generation (SHG) and photoinduced second-order nonlinear optical effects of N-phenyls with different numbers of aromatic rings deposited on glass substrates were studied. A strong dependence of the photoinduced SHG versus the number of aromatic rings determining the degree of film crystallinity was seen and it was found that for the photoinduced first-order nonlinear optical effect the dominant contribution is an amorphous-like structure component.

Optical properties, Density functionals, Density functional theory, Structure, Phenyl compounds

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Conjugated polymer/molten salt optimization

Article Abstract:

The importance of finding optimized conditions to produce the molten salt-polymer blends best suited for favoring electron and hole injection in thin layer electrochemical cells is highlighted. Electric force microscopy measurements show that increasing the salt content results in producing a reduced number of larger salt domains, so that the overall perimeter of the discotic salt domains exhibits a maximum as a function of the salt concentration in the solution.

Unsupported plastics film & sheet, Unsupported Plastics Film and Sheet (except Packaging) Manufacturing, Vinyl Film, Usage, Design and construction, Fluorescence, Batteries, Semiconductor doping

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Reconstructing local interaction potentials from perturbations to the thermally driven motion of an atomic force microscope cantilever

Article Abstract:

Issues concerning the use of the atomic force microscope to determine the spatial distribution of the forces occurring between nanometer scale objects are presented.

Measurement, Chemistry, Physical and theoretical, Physical chemistry, Surface chemistry

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