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Four New Stable Lanthanide Organic Frameworks: Highly Selective Luminescent Sensing and Magnetic Properties
Author(s) -
Zhang SiSi,
Yan YangTian,
Zhang WenYan,
Guo FuSheng,
Wang YaoYu
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800051
Subject(s) - isostructural , lanthanide , luminescence , antiferromagnetism , ion , materials science , metal organic framework , benzoic acid , thermal stability , metal ions in aqueous solution , chemistry , metal , inorganic chemistry , crystallography , crystal structure , optoelectronics , organic chemistry , physics , metallurgy , adsorption , condensed matter physics
Four new two‐dimensional isostructural lanthanide metal‐organic frameworks {[Ln(L)(LH)(H 2 O) 2 ]⋅H 2 O} n ( 1‐Ln ; Ln=Sm, Eu, Tb and Dy) were successfully assembled under hydro(solvo)thermal conditions by Ln 3+ salts and 4‐(3‐carboxyl‐1,2,4‐1H‐triazol‐1‐yl) benzoic acid (H 2 L). Compounds are isostructural and display a 2D 3‐connected fes 2‐periodic net with the point symbol of (4⋅8 2 ). Thus, 1‐Eu was chosen as a probe for sensing different metal ions and anions due to the excellent luminescence and good luminescent stability in water. 1‐Eu shows high selectivity for Fe 3+ , Cr 2 O 7 2− and CrO 4 2− ions, indicating that 1‐Eu should be an excellent candidate for luminescence sensing material. Furthermore, antiferromagnetic exchange couplings between the neighbouring Dy 3+ ions exist in 1‐Dy .