首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >Synthesis and properties of new phosphorescent red light-excitable platinum(II) and palladium(II) complexes with schiff bases for oxygen sensing and triplet-triplet annihilation-based upconversion
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Synthesis and properties of new phosphorescent red light-excitable platinum(II) and palladium(II) complexes with schiff bases for oxygen sensing and triplet-triplet annihilation-based upconversion

机译:具有席夫碱的新型磷光红光可激发铂(II)和钯(II)配合物的合成及性能,用于氧传感和基于三重态-三重态an灭的上转换

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摘要

New Pt(II) and Pd(II) complexes with donor-acceptor Schiff bases are conveniently prepared in only two steps. The complexes efficiently absorb in the red part of the spectrum (ε > 10~5 M~(-1) cm -1) and show moderate to strong room-temperature phosphorescence in the near-infrared (NIR) region. Particularly, Pt(II) complexes possess phosphorescence quantum yields (Φ) of ~10%, but the emission of the respective Pd(II) complexes is less efficient (Φ ≈ 1%-2%). The complexes exhibit solvatochromic behavior, in which the absorption and emission spectra shift bathochromically in polar solvents. The Pt(II) complexes are embedded in polystyrene to produce oxygen-sensing materials. The Pd(II) and Pt(II) complexes are demonstrated to be efficient sensitizers in triplet-triplet annihilation-based upconversion systems.
机译:具有供体-受体席夫碱的新型Pt(II)和Pd(II)配合物只需两步即可方便地制备。配合物有效吸收光谱的红色部分(ε> 10〜5 M〜(-1)cm -1),并在近红外(NIR)区域显示中等至强的室温磷光。特别是,Pt(II)配合物的磷光量子产率(Φ)为〜10%,但各个Pd(II)配合物的发射效率较低(Φ≈1%-2%)。配合物表现出溶剂变色行为,其中吸收和发射光谱在极性溶剂中发生红移。 Pt(II)配合物嵌入在聚苯乙烯中以产生氧敏感材料。在基于三重态-三重态an灭的上转换系统中,Pd(II)和Pt(II)配合物被证明是有效的敏化剂。

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