Four novel mixed-ligand metal−organic frameworks (MOFs), [Zn5(μ3-OH)2(BTA)2(tp)3]n (1), [Zn(BTA)(chdc)0.5]n (2), [Zn(BTA)(ap)0.5]n (3), and [Zn(BTA)(gt)0.5]n (4) (BTAH = benzotriazole, H2tp terephthalic acid, H2chdc 1,4-cyclohexanedicarboxylic H2ap adipic H2gt glutaric acid), have been synthesized by the reaction of zinc(II) chloride BTAH with four different aromatic/aliphatic binary acids under similar hydrothermal conditions. All these compounds are fully structurally characterized...

A red-emitting layer constructed from {Eu₂Na(CH₃COO)₂} chains and 4,4′-(pyridine-2,6-diyl)dibenzolate linkers exhibits luminescent discriminations for three nitrofuran antibiotics toxic Cr₂O₇²⁻ MnO₄⁻ anions.

A novel 3D lead(II) metal–organic framework {Pb4(Bdc)3(µ4-O)(H2O)}n (1) (H2Bdc = isophthalic acid) with octanuclear [Pb8(Bdc)6(µ4-O)2(H2O)2] as secondary building units (SBUs) has been obtained and fully characterized by single crystal X-ray diffraction, IR, elemental analysis, TG-DTA fluorescent spectra. XRD results indicate SBU contains two inversely related [Pb4(µ4-O)] cores is extended topologically into an infinite eight-connected bcu-type network via twelve Bdc ligands linking eight...

Two 3D coordination polymers with the same components but different structures, [Cu(II)(2)Cu(I)(trz)(3)(Hbtc)](n) (1) and [Cu(4)(Htrz)(2)(mu(3)-OH)(2)(btc)(2)](n) (2), were obtained together by a one-pot hydrothermal reaction of Cu(OAc)(2).H(2)O, 1,2,4-triazole (Htrz), 1,3,5-benzenetricarboxylic acid (H(3)btc). Complex 1 is mixed-valence Cu(I/II) honeycomb built from wavy Cu(II)-trz-carboxylate layers Cu(I) nodes doubly deprotonated Hbtc(2-) ligands covalently filled in channels. In...

Three new homometallic lanthanide complexes with mixed carboxylate-modified rigid ligands, [Ln(μ3-OH)(na)(pyzc)]n (na– = 1-naphtholate, pyzc– 2-pyrazinecarboxylate, Ln Dy (1), Yb (2), and Gd (3)), were solvothermally synthesized, their structures magnetic as well photophysical properties completely investigated. Complexes 1–3 are crystallographically isostructural, exhibiting linear chains four bidentate bridging μ-COO– moieties encapsulated cubic {Ln4(μ3-OH)4}8+ clusters repeatedly extended...

The peroxidase-like activity of graphitic carbon nitride (g-C₃N₄) is dramatically increased by a small cobalt doping. cobalt-doped g-C₃N₄ was used for wastewater treatment, exhibiting much higher degradation rate than that pure g-C₃N₄.

A micrometer-sized europium(<sc>iii</sc>)–organic framework with good dispersibility, excellent thermal and environmental stability, easy regeneration ability can serve as a dual-responsive luminescent sensor to probe both Cr₂O₇²⁻ picric acid contaminants in water system.

Highly dispersed Ni nanoparticles within graphitic carbon layers were prepared by facile thermolysis of a Ni-MOF, which exhibited outstanding catalytic performance in the chemoselective hydrogenation diverse functionalized nitro compounds.

A centrosymmetric Dy2 single-molecule magnet (SMM) and its doped diamagnetic yttrium analogues, Dy0.19Y1.81 Dy0.10Y1.90, were solvothermally synthesized to investigate the effects of intramolecular exchange coupling quantum tunneling magnetization (QTM) on magnetic relaxation dynamics. Constructed from two hula-hoop-like DyIII ions a pair phenoxido groups, antiferromagnetically coupled exhibits thermal-activated zero-field effective energy barrier (Ueff) 277.7 K negligible hysteresis loop at...

In this work, BEA-type hierarchically structured stannosilicate zeolite Sn-Beta-H was developed, which involved alkali-induced degradation of all-silica Beta (Si-Beta) and self-assembly the resultant Si-Beta fragments with SnCl2·2H2O in hydrothermal condition templated tetraethylammonium hydroxide (TEAOH) polydiallydimethylammonium chloride (PDADMAC). The synthesized comprehensively characterized by means XRD, N2 physisorption, TEM, UV–vis, XPS, TG, DRIFT, FTIR spectroscopy pyridine...

Novel hierarchical NiO nanoflowers assembled by ultrathin nanoflakes were found to exhibit intrinsic superoxide dismutase-like activity for the first time.

In our efforts to investigate the coordination architectures of transition metals and organic ligands with tailored structures, we have prepared two structurally related rigid bulky acridine-based ligands, 9-[3-(2-pyridyl)pyrazol-1-yl]- acridine (L1) 9-(1-imidazolyl)acridine (L2), synthesized characterized four their Ag(I) complexes, {[AgL1](ClO4)}2 (1), {[AgL1](NO3)}2 (2), [AgL22](ClO4) (3), {[(Ag3L23)(NO3)](NO3)2(H2O)}∞ (4). The single-crystal X-ray diffraction analysis shows that...

The complex stability constants (KS) and thermodynamic parameters (ΔH° TΔS°) for 1:1 intermolecular complexation of three water-soluble calixarenes, that is, p-sulfonato calix[4]arene (C4AS), thiacalix[4]arene (TCAS), calix[5]arene (C5AS), with dipyridines (4-DPD 2-DPD) 1,10-phenanthroline (Phen) have been determined by means titration microcalorimetry in an acidic buffer solution (pH = 2.0) at 298.15 K, their binding modes investigated 1H NMR 2D ROESY spectroscopy. results obtained indicate...

A 2D luminescent MOF serves as an ideal chemosensor for nitroaromatic compounds, especially TNP, <italic>via</italic> quenching.

A novel 4,8‐connected Eu‐MOF with paddle wheel‐shaped {Eu 2 (COO) 4 } subunits extended by 4‐connected BTCTB 3– linkages is hydrothermally synthesized incorporating C 3 ‐symmetric 3,3 ′ ,3 ′′ ‐[1,3,5‐benzenetriyltris(carbonylimino)]tris‐benzoate ligand (BTCTB), which exhibits high stability, good dispersion and intense red emission. Resulting significantly from the synergetic inner filter effect photoinduced electron transfer, framework shows rapid efficient fluorescence decay towards...

To investigate the coordination behavior of 2,6-diaminopurine (Hdap) and to construct unique high-dimensional nucleobase-based complexes, six Hdap-based ZnII/CdII polymers were obtained by incorporating aliphatic/aromatic polycarboxylate as coligands under hydrothermal conditions fully structurally characterized. Significantly resulting from synergistic nucleobase groups, they are a tetranuclear ZnII-core-based two-dimensional (2D) covalent layer for {[Zn4(μ2-Hdap)2(tp)3(μ3-OH)2]·2H2O}n (1),...

Three new paramagnetic ion-directed coordination frameworks, {[Co(4)(H(2)O)(2)(μ(3)-OH)(2)(atz)(2)(nip)(2)]·3H(2)O}(n) (1), {[Mn(4)(H(2)O)(2)(μ(3)-OH)(2)(atz)(2)(nip)(2)]·H(2)O·MeOH}(n) (2) and {[Cu(2)(H(2)O)(μ(3)-OH)(atz)(nip)]·2H(2)O}(n) (3), were, respectively, obtained by solvo-/hydrothermal reactions of 5-amino-1H-tetrazole (Hatz), 5-nitroisophathalic acid (H(2)nip) with an inorganic Co(II), Mn(II) or Cu(II) salt. The former two complexes are two-dimensional (2D) covalent layers built...

Two new 3-amino-1,2,4-triazole (amtrz)-based 3D MOFs, [Cu4(amtrz)2(μ3-OH)2(btc)2]n (1), and [Cu5(amtrz)2(H2O)2(μ3-OH)2(btec)2]n (2) (btc3− = 1,3,5-benzenetricarboxylate btec4− 1,2,4,5-benzenetetracarboxylate), were hydrothermally synthesized structurally magnetically characterized. Each cationic [Cu4(amtrz)2(μ3-OH)2]6+ cluster in 1 is periodically extended into an infinite 3,6-connected rtl-type topological network via six btc3− ligands. In contrast, analogous CuII4 clusters to square-planar...

Three unique [Cu4(μ3-OH)2]6+ core-based magnetic complexes, [Cu4(amtrz)2(μ3-OH)2(nb)6]·2H2O (1), {[Cu5(H2O)6(trz)2(μ3-OH)2(btc)2]·0.6H2O}n (2), and {[Cu5(H2O)2(Htrz)2(μ3-OH)2(btec)2]·0.125H2O}n (3) (amtrz = 4-amino-1,2,4-triazole, Htrz 1,2,4-triazole, Hnb 4-nitrobenzoic acid, H3btc 1,2,3-benzenetricarboxylic H4btec 1,2,4,5-benzenetetracarboxylic acid), were synthesized by varying the spacer functionality of mixed ligands. Significantly resulting from cooperative cocoordination metal ions...

Photocatalytic properties of four benzothiadiazole functionalized coordination polymers have been reported.

The development of non-precious metal based electrocatalysts for the hydrogen evolution reaction (HER) has received more and attention over recent years owing to energy environmental issues, Mo materials have been explored as a promising candidate. In this work, molybdenum carbide/N-doped carbon hybrids (Mo2C@NC) were synthesized facilely via one-step high-temperature pyrolysis by adjusting mass ratio urea ammonium molybdate. Mo2C@NC consisted ultrasmall nanoparticles encapsulated N-doped...