
TY  - JOUR
A1  - Leaver, IH 
A1  - Milligan, B 
A1  - Holt, LA 
T1  - Fluorescent whitening agents. VII. Photodimerization of a naphthotriazolylstilbene derivative
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 2
SP  - 437
EP  - 442
KW  - 
UR  - https://doi.org/10.1071/CH9760437 
N2  - Photolysis of the trans (E) isomer of N-butyl-4-(2H-naphtho[1,2-d Itriazol-2-y1)stilbene-2-sulphonamide(1) in dioxan results in isomerization and dimerization. A fluorescent photodimer of trans(1) has been isolated and characterized. Fluorescence and photochemical quantum yields and ultravioletspectra of trans (1) and its photoproducts are given.Although trans (1) photodimerizes rapidly in polymer films, this causes no change in the fluorescenceemission spectrum. The absence of the characteristic fluorescence of the dimer is attributed tolong-range resonance transfer of energy from the excited dimer to a neighbouring molecule of trans(1) in the polymer. 
ER  -

