Über das «pK» elektronisch angeregter Azulenium‐Kationen
作者： R. Hagen , E. Heilbronner , W. Meier , P. Seiler
关键词: Internal conversion (chemistry) 、 Photochemistry 、 Azulene 、 Excited state 、 Fluorescence 、 Quenching (fluorescence) 、 Ground state 、 Chemistry
摘要: It is shown that azulenium cations in the first electronically excited state S1 are stronger acids than ground S0. Their apparent pK″*, obtained from H0-dependence of quenching cation S0 fluorescence does not correspond to a true acid-base equilibrium S1. The pK″* values kinetically controlled, rate reprotonation azulene being too low compete with internal conversion
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