Hooda Anjli, Nehra Kapeesha, Dalal Anuj, Bhagwan Shri, Gupta Isha, Singh Devender, Kumar Sumit
Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India.
Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana, 131039, India.
J Fluoresc. 2022 Jul;32(4):1529-1541. doi: 10.1007/s10895-022-02956-9. Epub 2022 May 8.
Trivalent europium complexes exhibit good luminescent characteristics. A series of octacoordinated ternary europium complexes with fluorinated diketone and heteroaromatic auxiliary unit were synthesized. The synthesized europium complexes were characterized by elemental, thermal, electrochemical and spectroscopic analyses. Band gap values lie in range of semiconductors which confirm the conducting behavior of prepared complexes. Photoluminescence spectra were recorded in solid state and DMSO solvent. Emission spectral profiles have displayed most intense peak at ~ 612 nm corresponding to hypersensitive D → F transition. Colorimetric parameters suggest red luminous nature of europium complexes. The luminescent heteroleptic europium complexes might be utilized as emissive materials for fabricating display.
三价铕配合物表现出良好的发光特性。合成了一系列具有氟化二酮和杂芳族辅助单元的八配位三元铕配合物。通过元素分析、热分析、电化学分析和光谱分析对合成的铕配合物进行了表征。带隙值处于半导体范围内，这证实了所制备配合物的导电行为。在固态和二甲基亚砜溶剂中记录了光致发光光谱。发射光谱曲线在~612 nm处显示出最强峰，对应于超灵敏的D→F跃迁。比色参数表明铕配合物具有红色发光性质。发光的异核铕配合物可作为发光材料用于制造显示器。
