Abstract
A series of hybrids basing on Tb-doped CaAl hydrotalcite-like layered double hydroxides (Tb-LDH) combined with tryptophan (Trp) were prepared in an ethanol/water system. The structure, composition, and fluorescence of the hybrids have been investigated in detail by various characterizations. XRD patterns revealed some new reflections attributed to the hybrids. EDS and CHN elemental analysis results indicated that the content of C and N elements markedly increased after the Ca–Al–Tb LDH reacted with 0.01, 0.05, 0.10, and 0.25 mol L−1 Trp ethanol/water solutions, respectively. IR spectra showed that bands attributed to Trp appeared as the Tb-LDH reacted with 0.10 and 0.25 mol L−1 Trp. A thermal decomposition study found that the TG–DTG curves of hybrids were different. Fluorescent spectra suggested that the green emission due to the 5D4–7F5 transition of Tb3+ was almost quenched. Based on these results, the hybridization mechanism of Tb-LDH and Trp was discussed.
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The project was supported by the National Natural Science Foundation of China (No.51162021)
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Chen, Y., Zhang, K., Bao, Y. et al. Study on hybrization of Tb3+-doped CaAl layered double hydroxides and tryptophan. Res Chem Intermed 43, 4907–4921 (2017). https://doi.org/10.1007/s11164-017-2920-9
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DOI: https://doi.org/10.1007/s11164-017-2920-9