Collect. Czech. Chem. Commun. 1979, 44, 2015-2023

Laser flash-photolysis of methylene blue solutions

Viktor Řehák and Jaroslav Poskočil

Institute of Chemical Technology, 532 10 Pardubice


Besides population and relaxation of T1 state of methylene blue in methanolic solution it has been possible to observe increase and decomposition of a transient with longer lifetime which is probably a triplet excimer of the dyestuff. Kinetic measurements have enabled to determine the lifetime of the T1 excimer, rate constants of energy-transfer to oxygen and electron-transfer from pyrrolidine to T1 of the dyestuff.