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The Photolysis Of The Endoperoxide Of 9,10-Diphenylanthracene

1980; Elsevier BV; Volume: 70; Issue: 1 Linguagem: Inglês

10.1016/0009-2614(80)80065-0

1873-4448

W. Drews, R. Shimidt, H.‐D. Brauer,

Photochemistry and Electron Transfer Studies

During the photolysis of the endoperoxide of 9,10-diphenylanthracene, two different reactions are observed, depending on the irradiation wavelength: (i) Excitation of the S1 band causes a homolytic cleavage of the peroxide bridge with a quantum yield Q2 = 0.08. (ii) Irradiation of the S2 band leads to an adiabatic photocleavage of the endoperoxide into 9,10-diphenylanthracene and singlet molecular oxygen with a quantum yield Q1 = 0.28. Both reaction pathways confirm the theory of Kearns and Khan concerning the photolysis of endoperoxides