首页> 外文期刊>RSC Advances >Synthesis and structure of color tunable and white-light emitting lanthanide metal-organic framework materials constructed from conjugated 1,1 '-butadiynebenzene-3,3 ',5,5 '-tetracarboxylate ligand
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Synthesis and structure of color tunable and white-light emitting lanthanide metal-organic framework materials constructed from conjugated 1,1 '-butadiynebenzene-3,3 ',5,5 '-tetracarboxylate ligand

机译:可选择的缀合1,1'-丁二酰基苯-3,3',5,5'-二羧酸盐配体构建的颜色可调谐和白光发光镧系有机框架材料的合成与结构

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摘要

A series of novel lanthanide metal-organic frameworks, namely [Ln(2)(BBTC)(1.5)(DMF)(4)]center dot 2DMF center dot 4H(2)O [BBTC4- = 1,1'-butadiynebenzene-3,3',5,5'-tetracarboxylate, Ln = Sm (1), Eu (2), Gd (3), Tb (4), Dy (5), Er (6) and Yb (7)], have been prepared via solvothermal reaction. Single crystal X-ray analyses reveal that complexes 1-7 are isostructural and crystallize in the C2/c space group. They have the same three-dimensional (3D) architectures, topological analyses suggest that these frameworks possess the 3D (4,6)connected network with Schlafli symbol of {4(3).6(3)}(3).{4(4).6(7).8(4)}.{4(8).6(6).8}. Solid-state photoluminescent investigations at room temperature reveal that complex 2 and 4 emit the intensely red characteristic luminescence of Eu3+ ions and green luminescence emissions of Tb3+ ions, with a long lifetime up to 1.38 and 0.33 ms, respectively, during which the ligand emission of BBTC4- was quenched by the Eu3+ and Tb3+ ions. Complexes 5, 6 and 7 also display characteristic f-f luminescence emissions in the nearinfrared region, respectively. These results indicate that BBTC4- is an ideal ligand with an "antenna effect" for Ln(3+) ions, and an efficient energy transfer exists between them. Color tunable and white-light emitting materials were successfully achieved by carefully adjusting the doping concentration of Eu3+ and Tb3+ ions in the Gd3+ compound through trichromatic method.
机译:一系列新型镧系金属 - 有机框架,即[LN(2)(BBTC)(1.5)(DMF)(DMF)(4)]中心点2DMF中心点4H(2)O [BBTC4- = 1,1'-丁二酰基苯 - 3,3',5,5'-四羧酸盐,LN = SM(1),EU(2),Gd(3),TB(4),Dy(5),ER(6)和YB(7)],已通过溶剂热反应制备。单晶X射线分析显示,复合物1-7是在C2 / C空间组中的性和结晶。它们具有相同的三维(3D)架构,拓扑分析表明,这些框架拥有3D(4,6)连接网络,其中Schlafli符号为{4(3).6(3)}(3)。{4( 4).6(7).8(4)}。{4(8).6(6).8}。室温下的固态光致发光调查显示,复合物2和4发出Eu3 +离子的强烈红色特征发光,TB3 +离子的绿色发光排放,寿命长达1.38和0.33ms,在此期间的配体排放BBTC4-通过EU3 +和TB3 +离子淬灭。复合物5,6和7还分别在附近的区域中显示特征F-F发光排放。这些结果表明BBTC4-是具有LN(3+)离子的“天线效应”的理想配体,它们之间存在有效的能量转移。通过小心地通过三色法仔细调节GD3 +化合物中的EU3 +和TB3 +离子的掺杂浓度来成功实现颜色可调和白光发射材料。

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  • 来源
    《RSC Advances》 |2016年第105期|共10页
  • 作者单位

    Nanjing Univ Sch Chem &

    Chem Engn State Key Lab Coordinat Chem Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Sch Chem &

    Chem Engn State Key Lab Coordinat Chem Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Sch Chem &

    Chem Engn State Key Lab Coordinat Chem Nanjing 210023 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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