Microheterogeneous systems, photochemistry

Kalyanasundaram K (1987) Photochemistry in microheterogeneous systems. Academic, New York... 

Kalyansundaram, K., 1987, Photochemistry in Microheterogeneous Systems , Academic press Inc., London. 

K. Kalyanasundaram. Photochemistry of Microheterogeneous Systems, Academic Press, London, 1987. 

Kalyanasundaram, K. Photochemistry in Microheterogeneous Systems Academic Press Orlando, FL, 1987 Chapter 10. 

In Section II.C, we described the reactivity of adsorbed dye species at liquid liquid junctions in heterogeneous photoredox reactions. The properties of these systems can be used to catalyze electron-transfer processes. The behavior of dyes at interfaces has been vigorously studied in micelles and microemulsion systems, and many excellent reviews and books are available on this subject [94-97]. In this section, we shall consider some basic aspects of photoprocesses in microheterogeneous systems that are relevant to polarizable ITIES. This is not intended to cover comprehensively the recent developments in the active area of photochemistry at organized assemblies, but to highlight how spatial confinement, hydrophilic hydrophobic forces, and local potentials can affect the course of a photochemical process. We shall also revise some recent developments in photocatalysis and photosynthesis at polarizable liquid liquid interfaces, highlighting advantages and limitations in relation to two-phase catalysis. 

Kalyanasundaram, K. "Photochemistry in Microheterogeneous System" Academic Press London, 1987. 

The appearance of an offset explains why net photochemistry is observed in the IL, in spite of an efficient back reaction. Fig. 4.7. The chalcone should be preferentially solvated by the [BMIM] organic cation rather than water. As Cc is formed by photoisomerization of Ct, it is either readily converted back to Ct (the back isomerization reaction) or to B2 and AH+. Afterwards, AH in the ionic liquid can be preferentially solvated by the anion and probably by the water molecules present on the water-saturated ionic liquid phase. Therefore, the photochemical production of net AH+ in water/ionic liquids biphasic systems for this chalcone could be explained by the existence of a microheterogeneous structure, where a small fraction of the flavyUum cations would be stabilized by hydrogen bonding and electrostatic interactions with the anions into the polar domains that contain water.[54]... 

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