Green Emission of Tb-doped Mg-Al Layered Double Hydroxide Response to L-lysine

• Published in: Journal of fluorescence Vol. 26; no. 3; pp. 813 - 820
• Main Authors: Chen, Yufeng, Bao, Yao, Wang, Xiaoqing
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2016
• Subjects: Aluminum - chemistry; Analytical Chemistry; Biochemistry; Biological and Medical Physics; Biomedical and Life Sciences; Biomedicine; Biophysics; Biotechnology; Hydroxides - chemistry; Lysine - chemistry; Magnesium - chemistry; Original Article; Spectrometry, Fluorescence; Terbium - chemistry; Response; Tb-doped; Green emission; MgAl-LDH; L-lysine
• ISSN: 1053-0509; 1573-4994
• DOI: 10.1007/s10895-016-1769-4

The paper describes a study on the green emission of a Tb-doped Mg-Al layered double hydroxide (Tb-LDH) response to L-lysine (Lys). Fluorescent study was found that the Tb-LDH exhibited strong green emission due to 5 D 4 - 7 F J (J = 5, 6) transition of Tb 3+ , and the green emission almost quenched while the Tb-LDH was exposed to 0.01, 0.05, 0.1, 0.25, and 0.5 mol·L −1 Lys solution, respectively. Meanwhile the emission attributed to Lys markedly increased as the Tb-LDH was exposed to 0.01 and 0.05 mol·L −1 Lys solution, then decreased as the concentration of Lys solution further increased to 0.5 from 0.05 mol·L −1 . The green emission of Tb-LDH optimal response to Lys happened at 0.05 mol·L −1 of Lys solution. XRD results revealed that no reflections ascribed to Lys appeared in the composites of Tb-LDH and Lys. IR spectra suggested that the IR spectra of Tb-LDH obviously changed after it was exposed to Lys solution. These results indicated that the green emission of Tb-LDH response to Lys was possibly owing to interaction between the Tb-LDH and Lys. Moreover, this interaction between the Tb-LDH and Lys may be resulted from absorption. The green emission of Tb-LDH response to Lys would be potential application in detecting L-lysine.