Observation of molecular association at liquid/liquid and solid/liquid interfaces by second harmonic generation spectroscopy

Article Abstract:

The electronic spectra of rhodamine dyes adsorbed at two hydrophobic interfaces, the heptane/water interface (L/L) and the hydrophobized silica/water interface (S/L) by using the resonance effect of second harmonic generation (SHG) spectroscopy is reported. The results indicate differences in adsorption behavior and molecular association between liquid/liquid and solid/liquid interfaces.

Methods, Spectrum analysis, Spectroscopy, Adsorption, Spectral analysis (Signal analysis)

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Diffusion of metal complexes inside of silica-surfactant nanochannels within a porous alumina membrane

Article Abstract:

Diffusion coefficients of metal complexes inside silica-surfactant nanochannels formed within porous alumina membrane are described. The result show that diffusion coefficients of charged metal complexes are of smaller magnitude due to the electrostatic interaction with ionic interface and in neutral ferrocene are influenced by the hydrophobicity rather than the molecular size.

Science & research, Research, Nanotechnology, Porous materials, Coordination compounds

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Solvation dynamics of fluorophores with an anthroyloxy group at the heptane/water interface as studied by time-resolved total internal reflection fluorescence spectroscopy

Article Abstract:

Solvent relaxation processes of 12-(9-anthroyloxy) stearic acid (12-AS) and 4-(9-anthroyloxy) butanoic acid (4-ABA) at the heptane/water interface are examined by time-resolved total internal reflection fluorescence spectroscopy. The results obtained for the binary mixture of heptane and ethanol can be ascribed to a local enrichment of ethanol molecules around fluorophores.

Industrial organic chemicals, not elsewhere classified, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Chemical preparations, not elsewhere classified, Ethanol, Ethyl Alcohol Manufacturing, Stearic Acid, Water, Alcohol, Fluorescence spectroscopy, Alcohol, Denatured

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