Fluorescence measurements at chenopodium chlorophyll protein CP 668

1. 1. The fluorescence spectrum of photoconverted CP 668 shows a high peak at 747 nm and a much lower one at 676 nm. 2. 2. From the action spectrum of 747-nm fluorescence it is concluded that, in aqueous solution, energy is transferred from CP 668 to CP 740. 3. 3. The influence of KCN and β-mercaptoethanol (reagents breaking S-S linkages) on the fluorescence spectrum of photoconverted CP 668 and on the action spectrum of 747-nm fluorescence was investigated