Selective Sensing of Fe(3+) and Al(3+) Ions and Detection of 2,4,6-Trinitrophenol by a Water-Stable Terbium-Based Metal-Organic Framework.
A water-stable luminescent terbium-based metal-organic framework (MOF), {[Tb(L1 )1.5 (H2 O)]⋅3 H2 O}n (Tb-MOF), with rod-shaped secondary building units (SBUs) and honeycomb-type tubular channels has been synthesized and structurally characterized by single-crystal X-ray diffraction. The high green emission intensity and the microporous nature of the Tb-MOF indicate that it can potentially be used as a luminescent sensor. In this work, we show that Tb-MOF can selectively sense Fe(3+) and Al(3+) ions from mixed metal ions in water through different detection mechanisms. In addition, it also exhibits high sensitivity for 2,4,6-trinitrophenol (TNP) in the presence of other nitro aromatic compounds in aqueous solution by luminescence quenching experiments.
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86) 371-6778-0136.
Li-Hui
LH
Cao
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86) 371-6778-0136.
Fang
F
Shi
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86) 371-6778-0136.
Wen-Min
WM
Zhang
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86) 371-6778-0136. zangsqzg@zzu.edu.cn.
Shuang-Quan
SQ
Zang
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86) 371-6778-0136.|Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR (P. R. China).
Thomas C W
TC
Mak
aqueous phase; metal-organic frameworks; microporous materials; multifunctional sensor; terbium