AEE-active cyclic tetraphenylsilole derivatives with similar to 100% solid-state fluorescence quantum efficiency

摘要

Two new strongly AEE active (I/I-0 approximate to 94) tetraphenylsilole-containing cyclosiloxanes with cyan emissions (lambda(em) = 500 nm) and similar to 100% solid state fluorescence quantum yields are reported. The intra- and intermolecular C-H...pi interactions in the crystal play a major role in the observed high solid state fluorescence quantum yields.