title: Fluorescence of Mg-Al-Eu ternary layered double hydroxide sensitivity to phenylalanine.
abstract: We reported for the first time the fluorescence sensitivity of a Mg-Al-Eu ternary layered double hydroxide (LDH) to phenylalanine (Phe). As shown in fluorescent spectra, the red emissions resulted from (5)D(0)-(7)F(J) transition (J=1, 2) of Eu(3+) were quenched by Phe, and a strong peak around at 492 nm emerged. A strong interaction between the Mg-Al-Eu LDH and Phe was manifested by markedly different chemical shift positions of the Mg 2p, Al 2p, Eu 4d, O 1 s, and C 1 s peaks in the XPS spectra from those of the LDHs. These results showed that the charges transfer from Phe to the trivalent Eu ions may be taken place.
authors.affiliation: Department of Chemistry, Nanchang University, Nanchang 330031, China. yfchen@ncu.edu.cn
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Chen
authors.forename: Songhua
authors.initials: S
authors.lastname: Zhou
authors.forename: Fei
authors.initials: F
authors.lastname: Li
authors.forename: Junchao
authors.initials: J
authors.lastname: Wei
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Dai
authors.forename: Yiwang
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D005453:Fluorescence; D006878:Hydroxides / Q000737:chemistry*; D008274:Magnesium / Q000737:chemistry*; D010649:Phenylalanine / Q000032:analysis*; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry; D014965:X-Rays
chemical_list: D006878:Hydroxides; D005063:Europium; D010649:Phenylalanine; D000535:Aluminum; D008274:Magnesium