Rate enhancement of nickel(II) complexation in dilute anionic surfactant solutions

Article Abstract:

A surfactant solution situation has been studied in which premicellar aggregation has previously been posited. Micelle-mediated rate changes of a probe reaction are thought to start considerably below the reported critical micelle concentration (CMC). Studies were kinetic and used stopped-flow spectroscopy in dilute anionic surfactant solutions. Ni(II)-surfactant micelles are thought to be responsible for the rate enhancement; that is, micellar catalysis occurs. More than the charge of the added ion must be considered.

Chemical reaction, Rate of, Chemical kinetics, Nickel compounds

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Application of Fourier Transform electron paramagnetic resonance in the study of photochemical reactions

Article Abstract:

The vauable application of Fourier transform electron paramagnetic resonance (EPR) in discovering photochemical reactions are discussed. EPR simplifies spectral analysis of reactants and products, facilitates identification of paramagnetic molecules, easily detects chemically induced dynamic electron polarization effects through stimulated EPR emission peaks and allows a thorough understanding of spin-state dynamics of paramagnetic species.

Usage, Electron paramagnetic resonance, Fourier transform spectroscopy

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Time-resolved fluorescence quenching in micellar assembly

Article Abstract:

The structure, dynamics and analysis of fluorescence quenching in molecular clusters are discussed. Statistical dispersion of micelles and intramolecular mobility of the reactants are also described. Size and molecular transport of surfactants, polymer surfactant clusters and block polymers are some of the target systems explored using fluorescence quenching methods determined by single-photon timing technique.

Fluorescence spectroscopy

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