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Mehr als ein Pentacentriplett entsteht bei der Absorption eines Photons. Y. Teki et al. beschreiben in der Zuschrift auf S. 6833 ff., wie die Messung transienter Absorptionen an Pentacenderivaten mit stabilen radikalischen Substituenten in verdünnter Lösung belegt, dass die ultraschnelle Bildung eines angeregten Triplettzustands in der Pentaceneinheit (violett) aus einem photoangeregten Singulettzustand...
The excited‐state dynamics of pentacene derivatives with stable radical substituents were evaluated in detail through transient absorption measurements. The derivatives showed ultrafast formation of triplet excited state(s) in the pentacene moiety from a photoexcited singlet state through the contributions of enhanced intersystem crossing and singlet fission. Detailed kinetic analyses for the transient...
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