Highly sensitive and selective fluorescent sensor based on a multi-responsive ultrastable amino-functionalized Zn(II)-MOF for hazardous chemicals

Zn(ii)/Cd(ii) based mixed ligand coordination polymers as fluorosensors for aqueous phase detection of hazardous pollutants

“…The sensing mechanism is clarified by the resonance energy transfer effect and competitive absorption between chromate anions and LMOF (50). 95 LMOFs ( 51) and ( 52) also showed the multi sensing properties for Fe 3+ and Cu 2+ cations among other interfering cations in water respectively in addition to the sensing of organic pollutants ( /6.10 × 10 −7 M. Competition for excitation energy between the analyte and LMOF due to a large overlap of absorbance/emission bands is specified to be the probable reason for selective sensing. 141 This section of the review gives a snapshot of various Zn(II)/Cd(II) based mixed ligand fluorosensors which are highly stable in water and showed selective and sensitive detection of various inorganic pollutants in the aqueous phase.…”

3D Cadmium(II)‐Based Coordination Polymer Constructed from V‐Shaped Semirigid Ligand: Selective Detection of Oxoanion Pollutants CrO42–, Cr2O72–, MnO4– in Water

“…In particular, V‐shaped asymmetric polycarboxylic acid, the two phenyl rings of which can appropriately rotate around the central metal atoms, may afford more interesting frameworks . In addition, we also notice that the introduction of N‐containing auxiliary ligands, such as 4,4′‐bipyridine, pyrazine, etc., into the metal‐carboxylate system may lead to new structural evolution and fine‐tune the structural motif of these metal‐organic hybrid compounds …”

Methanol Sensing by a Luminescent Zinc(II)‐Based Metal−Organic Framework

“…The first step to achieve the desired MOF is the preparation of ligand 2 (Figure 1, right), as described in the Heck procedure developed by Lengkeek et al [33] for the synthesis of luminescent DNA intercalator precursors. The purity was assessed by 1 H, 13 The presence of a small amount of DMSO is crucial to obtain an extended network of intermolecular hydrogen bonds ( Figure 3). One DMSO molecule is located between two carboxylic groups belonging to different ligands, forming H-bonding interactions between oxygen in the S=O and two COOH groups ( Figure S1, red circles), with an (C=O)OÀ H···(O=S)Me 2 distance of 1.78 Å.…”

“…[7][8][9][10][11] In this context, luminescent metal-organic frameworks are promising candidates, which can offer sensitive and rapid detection of hazardous compounds. [12][13][14] Metal-organic frameworks (MOFs) are a relatively new class of inorganic materials, which exhibit intriguing three-dimensional structures, high porosity and the possibility of tuning their optical properties through a suitable design strategy. [15][16][17][18][19][20][21][22][23] The hybrid nature of these species allows emissive behavior arising from different phenomena and interactions.…”