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具有杂芳族辅助配体的单核发光β-二酮酸酯Ln(III)配合物：合成与发光特性

Mononuclear luminous β-diketonate Ln(III) complexes with heteroaromatic auxiliary ligands: synthesis and luminescence characteristics.

作者信息

Hooda Anjli, Dalal Anuj, Nehra Kapeesha, Kumar Pawan, Singh Devender, Kumar Sumit, Malik Rajender Singh, Kumar Ramesh, Kumar Parvin

机构信息

Department of Chemistry, Maharshi Dayanand University, Rohtak, India.

Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana, India.

出版信息

Luminescence. 2022 Nov;37(11):1921-1931. doi: 10.1002/bio.4376. Epub 2022 Sep 15.

DOI:10.1002/bio.4376
PMID:36044585
Abstract

A series of lanthanide (samarium and terbium) β-diketonates with heteroaromatic auxiliary ligands was synthesized. The prepared complexes were characterized through electrochemical, thermal, and spectroscopic analyses. Infrared analysis revealed the binding of the respective metal ion to oxygen and nitrogen atoms of diketone and ancillary ligands. Thermogravimetry/differential thermogravimetry profiles provided thermal information and specified the high thermal stability of the prepared complexes. The complexes exhibited the sharp and structured Ln-based emission in the visible region upon irradiation in the ultraviolet range. Photophysical analysis demonstrated the green and orange-red emission due to the respective characteristic transitions of Tb and Sm ions. Photophysical properties affirmed the luminous behaviour of the synthesized complexes. These luminous lanthanide complexes could be used as emitting materials in the design of organic light-emitting diodes.

摘要

合成了一系列带有杂芳族辅助配体的镧系元素（钐和铽）β-二酮化合物。通过电化学、热学和光谱分析对所制备的配合物进行了表征。红外分析揭示了相应金属离子与二酮和辅助配体的氧原子和氮原子的结合。热重/微商热重曲线提供了热学信息，并表明所制备配合物具有高热稳定性。在紫外光范围内照射时，这些配合物在可见光区域表现出尖锐且有结构的基于镧系元素的发射。光物理分析表明，由于铽和钐离子各自的特征跃迁，出现了绿色和橙红色发射。光物理性质证实了合成配合物的发光行为。这些发光镧系配合物可用作有机发光二极管设计中的发光材料。

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