A multi-responsive MOF-based fluorescent probe for detecting Fe3+, Cr2O72− and acetylacetone

A novel ZnII-based MOF can selectively and sensitively recognize Fe3+, Cr2O72− and acetylacetone, simultaneously.

A Cu(i)–I coordination polymer fluorescent chemosensor with amino-rich sites for nitro aromatic compound (NAC) detection in water

The detection sensitivity increased as the sizes of [Cu₂I₂(MA)₂] decreased and the selectivity improved by introducing amino-rich ligands.

Luminescent sensing of nitroaromatics by crystalline porous materials

Designing strategies for the syntheses of targeted luminescent MOFs, nanoparticle/MOF composites and COFs described and their application in sensing nitroaromatic compounds and explosives discussed.

Size-controlled synthesis of metal–organic frameworks and their performance as fluorescence sensors

Fluorescent sensing experiments were carried out to compare the sensing performance for folic acid between bulk and nano Tb-MOFs.

Robustness, Selective Gas Separation, and Nitrobenzene Sensing on Two Isomers of Cadmium Metal-Organic Frameworks Containing Various Metal-O-Metal Chains

Poor stability has been one of the major difficulties affecting to the practical application of metal-organic frameworks (MOFs). In this work, we obtained two 3D structurally isomeric Cd-MOFs, {[Cd₆(NH₂Me₂)₂(PTB)₄(HCOO)₂(H₂O)]·(DMF)₁₃·(H₂O)₄} _n (FJU-35) and {[Cd₆(NH₂Me₂)₂(PTB)₄(HCOO)₂]·(DMF)₆·(H₂O)₂} _n (FJU-36) (H₃PTB = pyridine-2,4,6-tribenzoic acid) containing different Cd^II-O-Cd^II chains by varying the addition agents. FJU-35 with coordinated solvent and formate in asymmetric μ₃-η¹:η² coordination mode within the Cd^II-O-Cd^II chains is vulnerable to external attacks and is apt to collapse after activation, while FJU-36 with no coordinated solvent in the Cd^II-O-Cd^II chains but fully protected by the carboxylates from the ligands and the symmetric formate in the coordination mode μ₃-η²:η² is stable, and its activated sample shows efficient separation of C₂H₂/CH₄ and C₂H₂/CO₂ mixtures. Conversely, FJU-35 with more vulnerability is more sensitive to the detection of nitrobenzene than FJU-36.

A new Zn(ii) metal–organic framework having 3D CdSO4 topology as luminescent sensor and photocatalyst for degradation of organic dyes

A new Zn(ii) metal–organic framework having 3D CdSO₄ topology synthesized and deployed as a dual channel luminescent sensor for ferric ion and nitroaromatics, and a photocatalyst for the degradation of organic dyes.

A metal–organic framework as a “turn on” fluorescent sensor for aluminum ions

A new three-dimensional (3D) metal–organic framework exhibits high sensitivity and selectivity for Al³⁺ ions as a “turn on” fluorescent sensor.

pH-Stable Eu- and Tb-organic-frameworks mediated by an ionic liquid for the aqueous-phase detection of 2,4,6-trinitrophenol (TNP)

pH-Stable Eu- and Tb-organic-frameworks mediated by ionic liquids for the aqueous-phase detection of 2,4,6-trinitrophenol (TNP).

New discrete iodometallates with in situ generated triimidazole derivatives as countercations (Mn+ = Ag+, Pb2+, Bi3+)

By employing solvothermal in situ N-alkylation of organic bases with alcohols, four new iodometallates were obtained, and their structures are reported.

New in situ generated acylhydrazidate-coordinated complexes and acylhydrazide molecules: Synthesis, structural characterization and photoluminescence property

By utilizing the hydrothermal in situ acylation of organic acids with N2H4, three acylhydrazidate-coordinated compounds [Mn(L1)2(H2O)2] (L1=2,3-quinolinedicarboxylhydrazidate; HL1=2,3-dihydropyridazino[4,5-b] quinoline-1,4-dione) 1, [Mn2(ox)(L2)2(H2O)6]·2H2O (L2=benzimidazolate-5,6-dicarboxylhydrazide; HL2=6,7-dihydro-1H-imidazo[4,5-g]phthalazine-5,8-dione; ox=oxalate) 2, and [Cd(HL3)(bpy)] (L3=4,5-di(3'-carboxylphenyl)phthalhydrazidate; H3L3=6,7-dihydro-1H-imidazo[4,5-g]phthalazine-5,8-dione; bpy=2,2'-bipyridine) 3, as well as two acylhydrazide molecules L4 (L4=oxepino[2,3,4-de:7,6,5-d'e']diphthalazine-4,10(5H,9H)-dione) 4 and L5 (L5=4,5-dibromophthalhydrazide; L5=6,7-dibromo-2,3-dihydrophthalazine-1,4-dione) 5 were obtained. X-ray single-crystal diffraction analysis reveals that (i) 1 only possesses a mononuclear structure, but it self-assembles into a 2-D supramolecular network via the NhydrazineH⋯Nhydrazine and OwH⋯Ohydroxylimino interactions; (ii) 2 exhibits a dinuclear structure. Ox acts as the linker, while L2 just serves as a terminal ligand; (iii) In 3, L3 acts as a 3-connected node to propagate the 7-coordinated Cd(2+) centers into a 1-D double-chain structure; (iv) 4 is a special acylhydrazide molecule. Two OH groups for the intermediates 3,3'-biphthalhydrazide further lose one water molecule to form 4; (v) 5 is a common monoacylhydrazide molecule. Via the NhydrazineH⋯Ohydrazine, OhydroxyliminoH⋯Oacylamino and the π⋯π interactions, it self-assembles into a 2-D supramolecular network. The photoluminescence analysis reveals that 4 emits light with the maxima at 510nm.

Fluorescence tuning of Zn(ii)-based metallo-supramolecular coordination polymers and their application for picric acid detection

A series of metallo-supramolecular coordination polymers displayed strong and tunable visible luminescent emission and possessed the capability for detection of picric acid (PA) with high sensitivity and selectivity.

Copper(i) halide clusters based upon ferrocenylchalcogenoether ligands: donors, halides and semi-rigidity effects on the geometry and catalytic activity

Six copper(i) clusters based on ferrocenylchalcogenoethers with different nuclearities and geometries were prepared. Telluroether-based cluster 2 effectively catalyzes the C–N cross-coupling reaction.

The ionothermal synthesis, structure, and magnetism-structure relationship of two biphenyl tetracarboxylic acid-based metal-organic frameworks

Two new metal-organic frameworks (1-2) were ionothermally obtained by the reaction of a biphenyltetracarboxylic sodium (Na4BPTC) ligand and M(OOCCH3)2 (M = Co(1) and Mn(2)). Crystal structure analysis reveals that 1 is a Co3Na6 unit-based three dimensional heterometallic MOF, while 2 exhibits a {Mn(COO)n} chain-based three-dimensional framework. Furthermore, the magnetic measurement shows that both of them have anti-ferromagnetic properties. A combination of Density Functional Theory (DFT) and Quantum Monte Carlo (QMC) simulation uncovers that in 2 the coupling parameters between two adjacent Mn(II) ions are J1 = -2.0 cm(-1) and J2 = -1.6 cm(-1), and the magnetism mainly originates from the propagation of Mn(II) ions by the super-exchange of carboxylates. Interestingly, the superexchange modes of J1 and J2 are different. Two spin nets of -/+/- dominate in the coupling for J1, while for J2 there are two spin nets of -/+/- and one spin net of +/-/+.

Assembly of photoluminescent [CunIn] (n = 4, 6 and 8) clusters by clickable hybrid [N,S] ligands

The controlled growth of luminescent copper(i)-iodide clusters has been achieved by tuning the structure of hybrid NS ligands using click chemistry.

Constructing novel Cd(ii) metal–organic frameworks based on different highly connected secondary building units via alteration of reaction conditions

Upon the reaction of Cd(ii) ions and 4-Ptz ligands under different conditions, three new Cd(ii) metal–organic frameworks were constructed based on different highly connected secondary building units.

Ionic liquid directed syntheses of water-stable Eu– and Tb–organic-frameworks for aqueous-phase detection of nitroaromatic explosives

Ionic liquid directed syntheses of water-stable Eu– and Tb–organic-frameworks for aqueous-phase detection of nitroaromatic explosives.