1. Model Compounds for the Photochemical Study

2. Mechanism of Coupling Reaction Primary factors controlling the overall reaction need to be understood. Possible approaches include, -Electrochemical oxidation/spectroelectrochemistry -Radiolysis to identify reaction kunetics and mechanism -Medium effects on the reaction kinetics -Identify propagating or quenching reactions

3. –Substituent groups alter the dye color –pH can bring about significant changes in the coloration – oleic acid serves as both buffering agent & surfactant – high surfactant concentration is known to minimize the amount of water which in turn favors the local peroxide concentration Medium Effects red blue red pKa 10.4pKa 3.4

4. Reactive Dyes Or Reactive Black 5 Sonolytic Degradation Vinodgopal & Kamat, Water Research, 1998, 32,3646-3650 Background information on dyeing of wool and other fibers with reactive dyes may be useful in considering alternate systems