Naina Vanitha R, Gillhuber Sebastian, Ritschel Christian, Jin Da, Lebedkin Sergei, Feldmann Claus, Weigend Florian, Kappes Manfred M, Roesky Peter W
Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstraße 15, 76131, Karlsruhe, Germany.
Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Karlsruhe, Germany.
Angew Chem Int Ed Engl. 2025 Jan 2;64(1):e202414517. doi: 10.1002/anie.202414517. Epub 2024 Oct 22.
To study the effect of a dye on the photoluminescence (PL) properties of metal complexes, a series of gold(I) complexes were synthesized, containing a 7-amino-4-methylcoumarin luminophore. The complexes are comprised of a coumarin moiety featuring different ancillary ligands, specifically N-heterocyclic carbenes, triphenylphosphine, and diphenyl-2-pyridylphosphine. The synthesized gold(I) complexes are luminescent both in solution and the solid state at room temperature and 77 K. Complexes of different nuclearity, i.e., mono-, di- and trinuclear compounds were synthesized. A clear trend between the nuclearity and the quantum yields can be seen. The coumarin dye not only improves the PL properties, but also enhances the luminescence of trinuclear clusters, which are otherwise known to be weak emitters in solution. The optical absorption properties were investigated in detail by quantum chemical calculations.
为研究一种染料对金属配合物光致发光（PL）性质的影响，合成了一系列含7-氨基-4-甲基香豆素发光团的金（I）配合物。这些配合物由具有不同辅助配体的香豆素部分组成，具体为N-杂环卡宾、三苯基膦和二苯基-2-吡啶基膦。合成的金（I）配合物在室温及77 K下的溶液和固态中均有发光。合成了不同核数的配合物，即单核、双核和三核化合物。可以看出核数与量子产率之间存在明显趋势。香豆素染料不仅改善了PL性质，还增强了三核簇的发光，而三核簇在溶液中原本是弱发射体。通过量子化学计算详细研究了光吸收性质。
