Selective and slow: The effects on the photophysics of a single salicylideneaniline molecule, induced by confinement in an all‐organic, weakly interacting molecular capsule of a matching size, are studied by time‐resolved spectroscopy. The capsule acts efficiently to select only one deactivation pathway after photoexcitation and keeps the photochromism in the solid state with a 300‐fold retardation—relative to the solution state—in the decay time of the photochromic product (see picture).
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