An In^III-based anionic metal–organic framework: sensitization of lanthanide (III) ions and selective absorption and separation of cationic dyes

Abstract

An In III -based anionic framework (In III -MOF) with 4-connected SrAl 2 topology was constructed. The In III -MOF with permanent porosity functions as a host for encapsulation of Ln 3+ ions through ion-exchange processes. The photophysical properties of as-prepared Ln 3+ @In III -MOF were investigated and the results showed that the In III -MOF could serve as an antenna to sensitize Ln 3+ cations, especially suitable for Tb 3+ and Eu 3+ ions. The possible sensitization mechanism has been studied by surface photovoltage spectroscopy. Additionally, In III -MOF could also as host materials applied in the separation and purification of cationic dyes, which is highly based on the size and charge of organic dyes. Moreover, it can be used as chromatographic column stationary phases to separate cationic dyes more efficiently and selectively. It is believed that the as-prepared In III -MOF may provide potential applications in optical materials and environmental fields.

Retracted: Luminescent In(III)‐based coordination polymer for selectively sensing Cr2O72−, antibacterial and anti‐inflammatory effect on the infectious abortion

“…To obtain MOF‐based sensors for the targeted application, their stability within base, acid, along with water is the principal problem to be considered. Recent literature have revealed that the In(III)‐based MOFs show good water stabilities due to the strong coordination bonds of donor O atoms and central In(III) ions . In this study, a novel water‐stable MOF based on In(III), namely [In 3 (btta) 2 (OH) 3 (H 2 O)]·(DMA) 2 ( 1 , DMA = N , N ‐dimethylacetamide), based on (2 E ,2′ E ,2″ E )‐3,3′,3″‐(benzene‐1,3,5‐triyl)triacrylic acid (H 3 btta), was obtained via a solvothermal reaction and structurally characterized by X‐ray diffraction of single crystal along with elemental analysis.…”

Surfactant-free synthesis of octahedral ZnO/ZnFe2O4 heterostructure with ultrahigh and selective adsorption capacity of malachite green

“…Meanwhile, the presenting adsorbents towards MG still suffer from limited removal capacity. In addition, in order to meet the growing demand of complex dye-containing wastewater treatment, sometimes removal of all the dyes is not always necessary since some valuable chemicals in the discharge streams need to be recycled 11 12 13 14 15 36 37 38 39 40 41 .…”

“…Recently, supramolecular hydrogels 41 , magnetic nanoparticles 19 36 and metal-organic frameworks (MOFs) 8 14 37 38 39 40 42 have generated increasing interest as dye adsorbents because of their high removal capacity, selective adsorption and separation. The selectivity is usually realized by non-covalent host–guest interactions such as π–π interaction, electrostatic interaction, hydrogen bonding, H-bonding, p–p stacking, hydrophobic interaction, and acid-base interaction between the adsorbent and dye molecules.…”

Thermochromic Behavior of Azobenzene‐based Coordination Polymer with Reversible Breathing Process

“…According to the above results and discussion, we suppose that the reversible thermochromic behavior might be ascribed to the change of the coordination environment of Zn 2+ ions with the loss of the lattice water and terminal water molecules at different temperatures . The thermochromic or hydrochromic behaviors are based on the processes of dehydration and rehydration and the thermochromic processes are reversible for sample 1 . MOFs‐films are important for a variety of practical applications, such as the development of different functional devices .…”