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报道了由芳香醛合成4,4’,6,6’-取代-2,2’-联吡啶化合物的方法,合成了一系列钠穴状化合物以及两个铕穴状化合物[Eu?bpy·bpy·bpy]·2Cl·Br(bpy=6,6’-二亚甲基-2,2’-联吡啶-4,4’-二甲酯)(23)和[Eu?bpy~1·bpy~1·bpy~2]·2Cl·Br(bpy~1=6,6’-二亚甲基-2,2’-联吡啶-4,4’-二甲酸,bpy~2=6,6’-二亚甲基-2,2’-联吡啶-4,4’-二甲酰乙二胺)(24).目标化合物均经过~1H NMR、13C NMR和高分辨质谱(HRMS)表征.X射线单晶衍射(XRD)和HRMS鉴定了铕穴状化合物23的结构.对23的荧光光谱(PL)、荧光衰减曲线和绝对量子产率(η)的研究结果表明,23能够有效地被近紫外光激发,显示荧光寿命(τ)为0.32 ms,η为70%的亮红色荧光,表明23是一种在发光和照明显示之中有着潜在应用的荧光材料.
A method for synthesis of 4,4 ’, 6,6’-substituted-2,2’-bipyridyl compounds from aromatic aldehydes was reported. A series of sodium compounds and two europium cryptate compounds [Eu? Bpy · bpy · Bpy] · 2Cl · Br (bpy = 6,6’-dimethylene-2,2’-bipyridine-4,4’-dimethyl ester) 1 · bpy ~ 2 · 2Cl · Br (bpy~1 = 6,6’-dimethylene-2,2’-bipyridine-4,4’-dicarboxylic acid, bpy~2 = 2,2’-bipyridine-4,4’-dicarboxylethylenediamine) (24) .The target compounds were characterized by ~ 1H NMR, 13C NMR and HRMS.X-ray Single crystal diffraction (XRD) and HRMS identified the structure of europium cryptate 23. The results of fluorescence spectra (PL), fluorescence decay curve and absolute quantum yield (η) of 23 show that 23 can be effectively converted into near-ultraviolet Photoexcitation showed a bright red fluorescence with a fluorescence lifetime (τ) of 0.32 ms and an η of 70%, indicating that 23 is a fluorescent material potentially useful in luminescent and lighting displays.