'Inverse' deuterium isotope effect in radiationless electronic transitions, singlet → triplet intersystem crossing in anthracene

Inverse deuterium isotope effect in the

Inverse deuterium isotope effect in the intersystem crossing of diphenylcarbene

✍ J.G. Langan; E.V. Sitzmann; K.B. Eisenthal 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 375 KB

The singlet-to-triplet intersystem crossing rate ( kST) of diphenylcarbene (DPC) is found to exhibit an inverse isotope effect in various solvents. An off-resonance coupling model between the initial singlet state and a sparse triplet vibronic manifold accounts for kST showing both an inverse isotop