AEE-active cyclic tetraphenylsilole derivatives with ∼100% solid-state fluorescence quantum efficiency†
Abstract
Two new strongly AEE active (I/I0 ≈ 94) tetraphenylsilole-containing cyclosiloxanes with cyan emissions (λem = 500 nm) and ∼100% solid state fluorescence quantum yields are reported. The intra- and intermolecular C–H⋯π interactions in the crystal play a major role in the observed high solid state fluorescence quantum yields.