Abstract
AbstractA σ‐bonded platinum(II) diketopyrrolopyrrole (Pt‐DPP) complex was synthesized from a reaction of p‐pinacolatoborylphenyl‐substituted DPP with dichloro(1,5‐cyclooctadiene)platinum(II), followed by a ligand exchange reaction with triphenylphosphine. The Pt‐DPP complex is highly fluorescent not only in solution but also in the solid state. From the comparison of the emission properties with those of N‐benzyl‐DPPs bearing phenyl and p‐bromophenyl substituents, the intense emission of the Pt‐DPP complex is ascribed to the DPP‐centered fluorescence. In the solid state, aggregation‐caused quenching is mitigated by the well‐segregated molecular packing due to the bulky triphenylphosphine ligands. The facile synthesis and unique fluorescence properties of the Pt‐DPP complex are beneficial for creating DPP‐based functional chromophores.
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