Photo-oxidation, sensitised by proflavine, of furfuryl alcohol, N-allyl thiourea and histidine

摘要: The photo-oxidations, sensitised by proflavine, of furfuryl alcohol, N-allyl thiourea and histidine as a function pH substrate concentration have been investigated. The rate oxidation the neutral compound alcohol is constant over range 9–3 decreases below 3. This decrease corresponds to change in fluorescence spectrum proflavine (fig. 4). A similar at low preceded an unexpected increase from 5 2 5). The 9 7, drops 7 virtually zero 4 6). can be interpreted quantitatively indicate that free imidazole groups not positively charged are oxidized, provided actual dependence on taken into account 8). This three substrates described terms simple reaction kinetics (equation 8).