Issue 1, 2015

Highly thermostable lanthanide metal–organic frameworks exhibiting unique selectivity for nitro explosives

Abstract

Three isostructural 3D metal–organic frameworks [Ln(L)1.5(DEF)]n (Ln = Gd (1), Eu (2), Tb (3), H2L = 9,9-diethylfluorene-2,7-dicarboxylic acid) have been solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction. The main framework of compounds 1–3 show high thermal stability to 400 °C but with a distortion or shrinking of the crystal lattice between 200 °C and 250 °C. The high red emission intensity and the microporous instinct of the solvent-free [Eu(L)1.5]n (2a) indicate that it can be potentially used as luminescent sensor. It was then applied in the detection of organic solvent molecules. Notably, it exhibits high sensitivity for 2,4,6-trinitrophenol (TNP) with Ksv constant 6.24 × 104 M−1 through luminescence quenching experiments.

Graphical abstract: Highly thermostable lanthanide metal–organic frameworks exhibiting unique selectivity for nitro explosives

Supplementary files

Article information

Article type
Communication
Submitted
25 Aug. 2014
Accepted
21 Nov. 2014
First published
21 Nov. 2014

RSC Adv., 2015,5, 93-98

Highly thermostable lanthanide metal–organic frameworks exhibiting unique selectivity for nitro explosives

S. Zhao, X. Song, M. Zhu, X. Meng, L. Wu, S. Song, C. Wang and H. Zhang, RSC Adv., 2015, 5, 93 DOI: 10.1039/C4RA13773F

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