Photochemistry ethanol/water

The photochemistry of chlorobenzene has also been investigated in ethanol-water solutions355 and in methanol356. In addition to photosubstitution of chlorine by OH or OR, formation of benzene was observed. The latter process was shown to be initiated by homolytic rupture of the C—Cl bond in the excited singlet as well as in the excited triplet state. 

Bamwenda, G.R., S. Tsubota, T. Nakamura and M. Haruta (1995). Photoassisted hydrogen-production from a water-ethanol solution - a comparison of activities of Au-Ti02 and Pt-Ti02. Journal of Photochemistry and Photobiology A-Chemistry, 89(2), 177-189. 

The photochemistry of the dithio-orthoesters (409) has been examined in ethanol or water solution. Photosolvolysis is the... 

Photosolvolysis of [Co(CN)6] has been reinvestigated in aqueous ethanol and in ethanol itself. It seems that cyanide is replaced wholly by water in solvent mixtures containing up to at least 60% ethanol. However, in 80% ethanol both [Co(CN)5(OH2)] - and [Co(CN)5(EtOH)]2- are formed. > A study of photosolvolysis of [Co(CN)6] in polyalcohol H- water solutions proved an exercise in photophysics rather than photochemistry. The main conclusion was that intersystem crossing efficiencies varied remarkably little as the solvent composition was varied from water to glycerol at mole fraction 0.69. This behavior is similar to that established earlier for some cyano and thiocyanato complexes of chro-mium(III). ... 

The photochemistry of BZP onto the modified celluloses is determined by the nature of the adsorption site (long alkyl chains or the hydroxyl groups of the polymer chains). The adsorption site of the probe depends on the solvent used for sample preparation ethanol privileges the first case while water leads to the second situation. As a consequence of the detected BZP phosphorescence, BZP ketyl radical fluorescence and hydrogen-bonded BZP luminescence reflect the different sites for adsorption. 

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