(S2→S0) and (S1→S0) luminescence of dimethylaminostyryl-β-diketonates of boron difluoride

• N,N-dimethylaminostyryl-β-diketonates of boron difluoride were synthesized.
• Two luminescent processes were revealed for the compounds.
• The quantum chemistry simulation of absorption spectra was calculated.
• These compounds form hydrochloride with a bright luminescence.

Spectral-luminescence properties of several dimethylaminostyryl-β-diketonates of boron difluoride with different α-substituents have been investigated through stationary and time-resolved spectroscopy. Quantum chemistry studies of the structure of excited states of 2,2-difluoro-4-(4′-dimethylaminostyryl)-6-phenyl-1,3,2-dioxaborine have been performed. Two luminescence centers have been revealed for the compound under study: an intensive band in the red–orange region of the spectrum caused by an S1–S0 transition and a short-wave luminescence in the blue region of the spectrum caused by an S2–S0 transition.

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