期刊
MATERIALS RESEARCH BULLETIN
卷 70, 期 -, 页码 336-342出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.04.055
关键词
Layered compounds; Intercalation reactions; X-ray diffraction; Luminescence
资金
- CNPq
- CAPES
- FINEP
- Fundacao Araucaria/CNPq
- CNPq/Ciencia sem Fronteiras
- MICINN [MAT2009-08526]
- ERDF
Rare earth (RE = Eu, Y and Tb) and zinc layered hydroxide salts intercalated with nitrate anions were synthesized, followed by exchange with 2-aminobenzoate. The obtained compounds were characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) and ultraviolet visible (UV-vis) spectroscopies, fluorescence measurements and thermal analysis (TGA/DTA). The results from FTIR spectroscopy suggest a direct coordination of 2-aminobenzoate to the metal cations of the inorganic layered structure. The organic derivative products from the intercalation reactions absorb a broader range of UV-light in relation to that shown by the parent material; the photoluminescence measurements present a strong violet, blue and green luminescence under UV-light excitation for layered compounds with, Zn, Y and Tb, respectively. Rare earth hydroxide salts (RE-LHS) are potential alternative matrices for the immobilization of organic species to produce luminescent materials. (C) 2015 Elsevier Ltd. All rights reserved.
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