Chemiluminescence of Pr3+ in the visible region from the 3P1, 3P0, 1D2 levels upon decomposition of adamantylideneadamantane-1,2-dioxetane catalysed by β-diketonates Pr(fod)3 and Pr(dpm)3. An unusual route for activator chemiexcitation

Chemiluminescence of Pr³⁺ is observed upon decomposition of adamantylideneadamantane-1,2-dioxetane (AAD) catalysed by β-diketonates Pr(L)₃ (L = fod or dpm), the excitation of Pr³⁺ occurring through intracomplex energy transfer from the excited adamantanone formed upon decomposition of AAD in the complex Pr(L)₃·AAD.