Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

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.