Post-synthetic modification of a Tb-based metal–organic framework for highly selective and sensitive detection of metal ions in aqueous solution

Abstract

Post-synthetic modification of a MOF led to selectivity and sensitivity enhancement for Fe3+ detection in water with a detection limit of 70 nM.

Metal–Organic Framework–Plant Nanobiohybrids as Living Sensors for On-Site Environmental Pollutant Detection

“…The characteristic bands of the carboxylate groups in the usual region at 1612 and 1538 cm –1 were assigned to the asymmetric stretching and at 1420 and 1400 cm –1 to the symmetric stretching (Figure S8d). When excited at 320 ± 20 nm, four sharp peaks characteristic of pure [Tb 2 (BDC) 3 (H 2 O) 4 ] luminescence appeared at 491, 545, 586, and 622 nm (Figure h), corresponding to the 5 D 4 → 7 F J ( J = 6, 5, 4, 3) transitions . After the formation of MOFs inside the plants, fluorescence signals could be observed under a UV lamp at 320 nm excitation.…”

“…Toxic metal ions and organic pollutants released in environmental water could cause tremendous adverse effects on the environment and human health; , for example, intake of Fe 3+ , Cu 2+ , Ag + , Cd 2+ , and anilines might cause Parkinson’s, pancreas, liver, heart, and Alzheimer’s diseases, , organ failure, cell toxicity, and certain cancers. , However, most of the current detection and capture methods (i.e., micro-solid phase extraction, atomic absorption spectrometry, chemiluminescence techniques, inductively coupled plasma mass spectrometry (ICP-MS), fiber-optical chemosensing method, electrochemical method, , high-performance liquid chromatography (HPLC), and gas chromatography (GC)) require complicated sample pretreatment processes, sophisticated instrumentation, high cost, and long analytical processing time in a credited laboratory. − In recent years, luminescent lanthanide-metal–organic frameworks (Ln-MOFs), which showcase a ratiometric “turn-up” or “turn-down” fluorescence response depending on the energy transfer efficiency through host–guest interactions, have received much attention and demonstrated important advantages, such as improved rapidity, operability, and sensitivity. − …”

Metal−Organic Frameworks for Liquid Phase Applications

“…This was attributed to the size exclusion of SO 4 2− and PO 4 3− being unable to fit into the framework channels. [277] Similar anion size-based intensity enhancement was observed in Zn-and Cd-MOFs containing 4,4′-bipyridine (bipy) and p-aminobenzoatein Fe 3+ , Hg 2+ and Cr 3+ FSOF (AIE) [268] Fe 3+ in water Cu-MOFs [269] Fe 3+ in water Eu-MOF/EDTA-NiAl-CLDH-M motor [270] Fe 3+ in water Tb-HIAAC [271] Fe 3+ in water Zn-DTA and Cd-DTA [272] Hg 2+ RuUiO-67 [273] Al 3+ and Lysine in HEPES buffer Cd-TCOOH [ Sulfonamide antibiotics FCS-1 [307] Nitrofuran, nitroimidazole, chloramphenicol, sulfonamide, and quinoline antibiotics TMPyPE@bio-MOF-1 [308] Nitro explosives and antibiotics in water Methyl red (MR) isomers (ortho, meta, and para) in ethanol MIL-100(Al) [310] Hippuric acid in urine MIL-121 [311] Polycyclic aromatic hydrocarbons Fe 3 O 4 @COF-(TpBD) [312] Mycotoxin ( Phenols and anilines in water LVMOF-1 [319] Enantioselective sensing (proline) S(R)-ZIF-78 h [320] Urea in human body fluids Ni-MIL-77 [321] Solvent molecules PU-1 and PU-2 [322] Bilirubin in human biofluids 1-NH 2 @THB [323] Glucose in blood PCN-222(Fe) [324] PhCHO and Fe 2+ in DMF Cd 0.5 (TBC)] n [325] Cardiac troponin I (cTn) in human bio-fluids Mn-MOF-PVC [326] o-and p-TCBQ isomers Tb@UiO-66-(COOH) 2 NH 2 [327] Pyrophosphate anion and antibiotics in water ZTMOF-1 [328] Trichloroacetic Adrenaline in human serum ZIF-67/NC/3DG [334] Chlorpyrifos in water and food samples Tb-MOF@PDDA-aggregated-AuNP [335] Tyrosine Ampicillin-binding aptamer in water (CdS/Eu-MOF) [343] Histamine and histidine in red wine and urine Cu-MOFs [344] n-methylformamide in urine and methylglyoxal in serum Tb 1− x Ybx@Cu-Hcbpp [345] Macrophage cells MOF-1114(Yb) and MOF-1140(Yb) [346] Nitrobenzene Mandelic acid, 1,2-cyclohexanediamine, 1-phenyleth...…”

AIE Infinite Coordination Polymer for Phosphate Ion Detection via Aggregation State Modulation

“…[12][13][14][15][16] CPs exhibit a broad application prospect in fluorescent sensing attributed to their tunable fluorescent property. [17][18][19][20][21][22][23][24][25][26][27] One of the methods to construct fluorescent CPs is introducing organic ligands with aggregation-induced emission (AIE). [28][29][30][31][32][33][34] AIE ligands are rigidified in the framework structures of MOFs, and thus, the bright fluorescence originated from them is observed.…”

“…Fluorescent sensing as a visual and in‐situ analytical technique has received increasing attention in the last decades . CPs exhibit a broad application prospect in fluorescent sensing attributed to their tunable fluorescent property . One of the methods to construct fluorescent CPs is introducing organic ligands with aggregation‐induced emission (AIE) .…”