SONOLUMINESCENCE OF ADAMANTILIDENEADAMANTANE-1,2-DIOXETANE SOLUTIONSTC
The sonoluminescence of stable at room temperature a four-member cyclic peroxide – namely adamantilideneadamantane-1,2-dioxetane in benzene and acetonitrile solutions at 60–72°C was studied. Along with the trivial dioxetane chemiluminescence caused by its thermal decomposition with the formation of electronically excited molecules of the ketone – adamantanone due to the rising temperature during of the solution sonolysis revealed the existence of an additional glow. This sonochemiluminescence related, obviously, with the decomposition of the dioxetane molecules is enhanced in the presence of an activator – 9,10-dibromoanthracene. Possible mechanisms of the observed specific effect of ultrasound on the dioxetane molecules are discussed.