Undoped and Eu3+ Doped Magnesium-Aluminium Layered Double Hydroxides: Peculiarities of Intercalation of Organic Anions and Investigation of Luminescence Properties

Aurelija Smalenskaite; Lina Pavasaryte; Thomas C K Yang; Aivaras Kareiva

doi:10.3390/ma12050736

Undoped and Eu³⁺ Doped Magnesium-Aluminium Layered Double Hydroxides: Peculiarities of Intercalation of Organic Anions and Investigation of Luminescence Properties

Materials (Basel). 2019 Mar 4;12(5):736. doi: 10.3390/ma12050736.

Authors

Aurelija Smalenskaite¹, Lina Pavasaryte^{2

3}, Thomas C K Yang^{4

5}, Aivaras Kareiva⁶

Affiliations

¹ Department of Inorganic Chemistry, Vilnius University, Naugarduko 24, LT 03225 Vilnius, Lithuania. aurelija.smalenskaite@chf.vu.lt.
² Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Road, Taipei 106, Taiwan. lina.pavasaryte@gmail.com.
³ Center for Precision Analysis and Materials Research, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan. lina.pavasaryte@gmail.com.
⁴ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Road, Taipei 106, Taiwan. ckyang@ntut.edu.tw.
⁵ Center for Precision Analysis and Materials Research, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan. ckyang@ntut.edu.tw.
⁶ Department of Inorganic Chemistry, Vilnius University, Naugarduko 24, LT 03225 Vilnius, Lithuania. aivaras.kareiva@chgf.vu.lt.

Abstract

The Mg₃/Al and Mg₃/Al_0.99Eu_0.01 layered double hydroxides (LDHs) were fabricated using a sol-gel chemistry approach and intercalated with different anions through ion exchange procedure. The influence of the origin of organic anion (oxalate, laurate, malonate, succinate, tartrate, benzoate, 1,3,5-benzentricarboxylate (BTC), 4-methylbenzoate (MB), 4-dimethylaminobenzoate (DMB) and 4-biphenylacetonate (BPhAc)) on the evolution of the chemical composition of the inorganic-organic LDHs system has been investigated. The obtained results indicated that the type and arrangement of organic guests between layers of the LDHs influence Eu³⁺ luminescence in the synthesized different hybrid inorganic⁻organic matrixes. For the characterization of synthesis products X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy, fluorescence spectroscopy (FLS), and scanning electron microscopy (SEM), were used.

Keywords: Eu doping effect; LDHs; intercalation of organic species; luminescence; size effect.