Luminescent Metal–Organic Framework Mixed‐Matrix Membranes from Lanthanide Metal–Organic Frameworks in Polysulfone and Matrimid

Abstract

Metal-organic framework/polymer (MOF-polymer) mixed-matrix membranes (MMMs) have been prepared by embedding the luminescent lanthanide (Ln) MOFs 3 ∞ [Sr 0.9 Eu 0.1 Im 2 ] and 2 ∞ [Tb 2 Cl 6 (bipy) 3 ]·2bipy (Im -= imidazolate, bipy = 4,4′-bipyridine) into polysulfone (PSF, Ultrason® S) and Matrimid® polymer films. The successful embedding of the Sr and Eu MOFs has been achieved for both matrixes, and the original MOF luminescence is maintained. The defect-free nature of the membranes was proven by the slightly lower gas permeation of the MMMs with the dense filler particles. For the Tb-bipy MOF, successful embedding is possible for polysulfone only. For the preparation of the MOF polymer membranes, the influence of [a]

New Microporous Lanthanide Organic Frameworks. Synthesis, Structure, Luminescence, Sorption, and Catalytic Acylation of 2-Naphthol

“…In the case of the Eu based framework 4 , besides the weak blue emission of the ligand, typical red emissions attributed to the Eu 3+ ion were observed. The characteristic sharp emissions at λ = 561 nm (very weak, 5 D 0 → 7 F 0 ), λ = 589 nm (medium, 5 D 0 → 7 F 1 ), λ = 611 nm (very strong, 5 D 0 → 7 F 2 ), λ = 616 nm (very weak, 5 D 0 → 7 F 3 ), and λ = 697 nm (very weak, 5 D 0 → 7 F 4 ) were in good correlation with the data reported in the literature [ 53 , 54 , 55 ]. The red emissions of framework 4 were confirmed through fluorescence microscopy by irradiating at λ = 365 nm, as can be seen in the SM, Figure S37 .…”

Thiacalix[4]arene‐Supported Tetranuclear TbIII and EuIII Compounds: Synthesis, Structure, Luminescence, and Magnetism

“…Four emission bands 489, 546, 583, and 621 nm correspond to the characteristic transitions 5 D 4 → 7 F 6 , 5 D 4 → 7 F 5 , 5 D 4 → 7 F 4 , and 5 D 4 → 7 F 3 , respectively. The most prominent emission was observed at 546 nm (Figure ), which agrees well with the common emissions of Tb III compounds . Upon excitation at 394 nm, 2 shows strong red luminescence, assigned to the characteristic 5 D 0 → 7 F J ( J = 0 – 4) transitions of Eu III : 5 D 0 → 7 F 0 (575 nm), 5 D 0 → 7 F 1 (588 nm), 5 D 0 → 7 F 2 (610 nm), 5 D 0 → 7 F 3 (656 nm), and 5 D 0 → 7 F 4 (693 nm).…”

A new lanthanum(III) complex containing acetylacetone and 1H-imidazole

“…The crystal structures of other related ImH complexes including lanthanide ions have also been reported (Dan et al, 2004;Dechnik et al, 2016;Meyer et al, 2015;Pan et al, 2016;Zhou et al, 2008;Zurawski et al, 2013).…”