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首页> 外文期刊>Advanced Functional Materials >Tris(8-hydroxyquinoline-5-sulfonate)aluminum Intercalated Mg-Al Layered Double Hydroxide with Blue Luminescence by Hydrothermal Synthesis
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Tris(8-hydroxyquinoline-5-sulfonate)aluminum Intercalated Mg-Al Layered Double Hydroxide with Blue Luminescence by Hydrothermal Synthesis

机译：水热合成三（8-羟基喹啉-5-磺酸）铝插层的Mg-Al层状双氢氧化物

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摘要

Blue luminescent hybrid materials (DDS-AQS(x%)/LDH) are successfully prepared by co-intercalating tris(8-hydroxyquinoline-5-sulfonate)aluminum anions (AQS3-) and dodecyl sulfonate (DDS-) with different molar ratios into Mg-Al layered double hydroxides (LDHs) by the hydrothermal and solution co-precipitation methods. A film of the material on a quartz substrate is obtained by the solvent evaporation method. The results show the blue luminescence is remarkably different from the pristine Na3AQS, which has cyan luminescence (ca. 450-470 nm vs. 495 nm). Furthermore, the hydrothermal product of DDS-AQS(66.67%)/LDH exhibits optimal luminous intensity and a significantly enhanced fluorescence lifetime. Nuclear magnetic resonance and Fourier-transform infrared spectroscopy indicate that the cyan-blue luminescence transition is due to the isomerization of meridional to facial AQS via ligand flip caused by a host-guest electrostatic interaction, in combination with the dispersion and pre-intercalation effect of DDS. The hydro-thermal conditions can promote a more ordered alignment of the intercalated fac-AQS compared with alignment in the solution state, and the rigid LDHs environment can confine the internal mobility of AQS to keep the facial configuration stable. This stability allows a facile preparation of large amounts of blue luminous powder/film, which is a new type of inorganic-organic hybrid photofunctional material.
机译：通过将三（8-羟基喹啉-5-磺酸）铝阴离子（AQS3-）和十二烷基磺酸盐（DDS-）共插入不同的摩尔比，成功制备出蓝色发光杂化材料（DDS-AQS（x％）/ LDH）镁铝层状双氢氧化物（LDHs）的水热和溶液共沉淀法。通过溶剂蒸发法在石英基板上获得该材料的膜。结果表明，蓝色发光与原始的Na3AQS显着不同，后者具有青色发光（约450-470 nm对495 nm）。此外，DDS-AQS（66.67％）/ LDH的水热产物表现出最佳的发光强度，并显着提高了荧光寿命。核磁共振和傅立叶变换红外光谱表明，青色-蓝色发光过渡是由于子体-客体静电相互作用引起的子午线经配体翻转异构化成面部AQS的异构体，并结合了DDS。与在溶液状态下的对准相比，水热条件可以促进插层的fac-AQS的对准更有序，并且刚性LDHs环境可以限制AQS的内部迁移率，以保持面部轮廓稳定。这种稳定性允许容易地制备大量的蓝色发光粉末/膜，这是一种新型的无机-有机杂化光功能材料。

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  • 来源
    《Advanced Functional Materials》 |2010年第17期|P.2848-2856|共9页
  • 作者

    Shuangde Li; Jun Lu; Min Wei; David C. Evans; Xue Duan;

  • 作者单位

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology P. Box 98, 100029, Beijing (P.R. China);

    rnState Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology P. Box 98, 100029, Beijing (P.R. China);

    rnState Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology P. Box 98, 100029, Beijing (P.R. China);

    rnState Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology P. Box 98, 100029, Beijing (P.R. China);

    rnState Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology P. Box 98, 100029, Beijing (P.R. China);

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