Pseudo-Jahn–Teller and TICT-models: a photophysical comparison of meta- and para-DMABN derivatives

Spectra and photophysical properties of a series of meta- and para-substituted aniline derivatives are compared. The radiative rate constant kf decreases strongly whenever the anomalous charge transfer fluorescence band is observed. In another case, a strong increase of kf is observed, independent of a second fluorescence band. These results are discussed within the pseudo-Jahn–Teller and the TICT model.