Two-photon fluorescence spectroscopy of individually trapped pseudoisocyanine J-aggregates in aqueous solution

Article Abstract:

A pseudoisocyanine dye aqueous solution including nanometer-sized J-aggregates was investigated by combining optical trapping and two-photon fluorescence spectroscopy. It was found that J-aggregates can be classified largely into tow groups which could be attributed to the difference in the nucleation process affected by the substrate and that highly ordered J-aggregates are trapped for a longer period of time because of their high polarizability.

Science & research, Research, Optical properties, Nucleation, Nucleation (Chemistry), Fluorescence spectroscopy, Structure, Polarization (Light)

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UV-visible spectroscopic study of solvation in ternary solvent mixtures: ketocyanine dye in methanol acetone water and methanol acetone benzene

Article Abstract:

The solvation characteristic of ketocyanine dye is studied by monitoring the absorption band of the dye in two ternary solvent mixtures. The maximum energy of absorption (E) of the dye, in both ternary and binary solvents mixtures are found to be deviated significantly from the mole fraction average of the E values in the component solvents.

Petrochemical Manufacturing, Benzene, Solvation

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Solvatochromic studies of ionic liquid/organic mixtures

Article Abstract:

The solvent strength of IL/organic mixtures is reported using Reichardt's dyes 30 and 33, Kamlet-Taft parameters and phenol blue. The results shows that the polarity of ILs is largely unaffected by the organic consolvent that is the probes are preferentially solvated by the ILs.

Cyclic Crude and Intermediate Manufacturing, Phenol, Phenol (Compound), Ionic solutions

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