Photochemical biphasic

Hori H, A Yamamoto, S Kutsuna (2005b) Efficient photochemical decomposition of long-chain perfluorocarboxylic acids by means of an aqueous/liquid COj biphasic system. Environ Sci Technol 39 7692-7697. 

Pina, F. et al.. Thermal and photochemical properties of 4, 7-dihydroxyflavylium in water-ionic liquid biphasic systems a write-read-erase molecular switch, Angew. Chem. Int. Ed., 43,1525,2004. 

Berenjian, N., de Mayo, P., Sturgeon, M.-E., Sydnes, L.K., and Weedon, A.C. (1982) Biphasic photochemistry micelle solutions as media for photochemical cycloadditions of enones. Canadian Journal of Chemistry, 60, 425-436. 

Lazare S, de Mayo P, Ware WR. Biphasic photochemistry the first actinometric reaction on a solid support. Photochem Photobiol 1981 34 187-190. 

Melis A and Duysens LNM. (1979). Biphasic energy conversion kinetics and absorbance difference spectra of photosystem II of chloroplasts. Evidence for two different system II reaction centers. Photochem. Photobiol. 29, 373-382... 

More conventional liquid-liquid biphasic conditions have been also conveniently employed to increase the efficiency of the photo-Fries reaction. For instance, p-methoxyphenyl esters of a, 5-unsaturated carboxyhc acids (30) undergo photochemical rearrangement, followed by basic cyclization to give... 

Trad, C.H. and Lipson, E.D., Biphasic fluence-response curves and derived action spectra for light-induced absorbance changes in Phycomyces mycelium, /. Photochem. Photobiol B Biol, 1,169,1987. 

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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