Coumarin 314 free radical cation: formation, properties and reactivity towards phenolic antioxidants
Alexis Aspée, E. Alarcón, Eduardo Pino, S.I. Gorelsky and J.C. Scaiano, “Coumarin 314 free radical cation: formation, properties and reactivity towards phenolic antioxidants”, J. Phys. Chem. A, 116(1),199-206 (2012). Jan. 2012
Methylene blue shows an isotope dependent triplet lifetime that is 50% longer in D2O compared with H2O as a result of electronic-to-vibrational relaxation. The effect is enhanced when the dye is bound to curcubituril due to a combination of restricted mobility and a unfavorable vibrational coupling.