TY - JOUR
T1 - Photophysics of lumichrome on cellulose
AU - Sikorski, Marek
AU - Sikorska, Ewa
AU - Khmelinskii, Igor V.
AU - Gonzalez-Moreno, Rafael
AU - Bourdelande, Jose L.
AU - Siemiarczuk, Aleksander
PY - 2003/3/20
Y1 - 2003/3/20
N2 - Lumichrome samples were prepared by depositing lumichrome on cellulose from methanol solutions. Diffuse reflectance absorption bands at 354 and 388 nm (shoulder) and the fluorescence band at 460 nm similar to those observed in polar solvents were attributed to a π → π * transition. The emission decay has a complex kinetics similar to that found in alloxazines, suggesting at least three emitting species with the respective lifetimes of about 0.95, 1.4 and 2.5 ns. Diffuse reflectance laser flash photolysis experiments provided the decay kinetics of the triplet state with the lifetime on the microsecond time scale and of the longer-lived semi-reduced radical absorbing in the 500-600 nm range with 0.24 ms lifetime. © 2003 Elsevier Science B.V.All rights reserved.
AB - Lumichrome samples were prepared by depositing lumichrome on cellulose from methanol solutions. Diffuse reflectance absorption bands at 354 and 388 nm (shoulder) and the fluorescence band at 460 nm similar to those observed in polar solvents were attributed to a π → π * transition. The emission decay has a complex kinetics similar to that found in alloxazines, suggesting at least three emitting species with the respective lifetimes of about 0.95, 1.4 and 2.5 ns. Diffuse reflectance laser flash photolysis experiments provided the decay kinetics of the triplet state with the lifetime on the microsecond time scale and of the longer-lived semi-reduced radical absorbing in the 500-600 nm range with 0.24 ms lifetime. © 2003 Elsevier Science B.V.All rights reserved.
KW - Cellulose
KW - Lumichrome
KW - Photophysics
U2 - 10.1016/S1010-6030(02)00427-6
DO - 10.1016/S1010-6030(02)00427-6
M3 - Article
VL - 156
SP - 267
EP - 271
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
SN - 1010-6030
IS - 1-3
ER -