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Preparation and characterization of a novel strong-fluorescent hydrotalcite-like compound (Al-HTLc)

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Abstract

A novel strong-fluorescent hydrotalcite-like compound (Al-HTLc) was synthesized by coprecipitation. In the sample, the content of aluminum(III) in the layers was decreased to a proper value. The Al3+ ions coordinated with 8-hydroxyquinolines (8-HQ) which were dispersed into the anions in the interlayer region. The sample was characterized by XRD, XPS, FT-IR, TG-DSC, UV-Vis, and fluorescence spectroscopy; its composition and structure were also determined. The results indicate that the sample can emit fluorescence (487 nm) with a strong fluorescence intensity (4.9×105 (a.u.)). The fluorescent lifetime and fluorescence quantum yield of Al-HTLc were measured to be 21.24 ns and 67%, respectively, higher than those of pure 8-hydroxyquinoline aluminum (Alq3). The result of TG-DSC measurement clearly shows the enhanced thermal stability of Al-HTLc compared with that of MgAl-LDH and pure Alq3. Al-HTLc may be used as a novel luminescent functional material.

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Authors and Affiliations

  1. Institute of Polymer Science, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, China

    WenGong Zhang & Hong Chen

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  1. WenGong Zhang
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  2. Hong Chen
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Correspondence to WenGong Zhang.

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Supported by the National Natural Science Foundation of China (Grant No. 50272014), the Key Item of Natural Scientific Foundation of Fujian Province (Grant No. 2001F005) and the Key Nano Special Item of Fujian Province (Grants No. 2005HZ01-5)

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Zhang, W., Chen, H. Preparation and characterization of a novel strong-fluorescent hydrotalcite-like compound (Al-HTLc). Sci. China Ser. B-Chem. 51, 834–841 (2008). https://doi.org/10.1007/s11426-008-0038-z

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  • DOI: https://doi.org/10.1007/s11426-008-0038-z

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