Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume 2022, Issue 14, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202200081
Keywords
Diketopyrrolopyrrole; Fluorescence; Platinum; Photophysics; Structure elucidation
Categories
Funding
- JSPS [18K19081]
- JSPS KAKENHI [JP19H02703]
- Grants-in-Aid for Scientific Research [18K19081] Funding Source: KAKEN
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A sigma-bonded platinum(II) diketopyrrolopyrrole (Pt-DPP) complex with high fluorescence properties in both solution and solid state was synthesized. The intense emission of the Pt-DPP complex is attributed 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 easy synthesis and unique fluorescence properties of the Pt-DPP complex are beneficial for the development of DPP-based functional chromophores.
A sigma-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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