Cost-effective and efficient photocatalysis are highly desirable in chemical synthesis. The outstanding performance of lead-halide perovskites in photoelectrons can be attribute to the high absorption coefficient, high fluorescence quantum efficiency and long excited state lifetimes, which are also required for efficient photocatalysis. Here we report a novel dual catalysis system that the merger of perovskite CsPbX<sub>3</sub> (X = Cl, Br, I) nanocrystals (NCs) with nickel(II) complex to formation C-O bonds by the cross-coupling of aryl/alkyl halides with carboxylic acids. Photophysical studies revealed that the excited-state nickel(II) produced through energy transfer from the excited photosensitizer perovskite NCs are responsible for the facility of reductive elimination. This type of energy transfer induced excited state activation is likely can be broadly used to the formation of C-C, C-N bonds as well. Comparing to the rare, high-price noble transition-metals (Ir, Ru, <i>etc</i>), the cost-effective, easily-prepared, highly-active and band-tunable hybrid halide perovskites are alternative choices in the photocatalysis of organic reactions.

General and efficient photocatalytic coupling of aryl/alkyl halides with carboxylic acids through the merger of perovskite and nickel(II) complex

256th National Meeting (2018)

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