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A pair of chiral metal–organic frameworks based on enantiomers of chiral Zn(salen) ligands has been successfully obtained by solvothermal subcomponent self-assembly. Both chiral MOFs were characterized by infrared spectroscopy, UV-vis absorption spectroscopy, thermogravimetric analysis, and single-crystal/powder X-ray diffraction. They crystallize in the chiral space group I222 and possess an extended 2D network with a sql topology. Moreover, these MOFs exhibit circularly polarized luminescence (CPL) with a dissymmetry factor of about 3.7 × 10−3. This work provides a simple strategy to make CPL-active MOF materials based on salen ligands. [ABSTRACT FROM AUTHOR]

A trigonal prismatic Cu6L3 coordination cage has been assembled from Cu(I) and semi‐rigid bipyrazolyl ligand. The X‐ray crystallography demonstrates that the cage has a cavity and can encapsulate the toluene as a guest, exhibiting thermochromism phenomenon. Empty cage can be obtained by expulsion of the guest through single crystal to single crystal transformation. After removed the guest, the empty cage shows a blue‐shifted emission (580 nm), in comparison to its parent cage (615 nm). The empty cage could further serve as a host to encapsulate other aromatic molecules (e. g. mesitylene), which shows new emission band. The trigonal prismatic Cu6L3 coordination cage provides a platform to make advanced luminescent materials. [ABSTRACT FROM AUTHOR]

Two one-dimensional (1D) helical coordination polymers, CuBIm–Cl and CuBIm–Br (BIm = 1,2-bis((5H-imidazol-4-yl)-methylene)hydrazine), are constructed from Cu2+ ions, halides and mono-deprotonated BIm. Solid-state crystalline conversions of CuBIm–Cl and CuBIm–Br to a gyroidal metal–organic framework (MOF) STU-3 which is composed of Cu ions and Bim ligands are observed through a gas–solid reaction, where the gas is methylamine. [ABSTRACT FROM AUTHOR]

A novel isohedral 3-periodic net (i.e. a net with one kind of tile), showing a Cairo pentagonal tiling projection on the Euclidean plane, has been identified in a series of site-modified CuCN/CuSCN networks, namely, [Cu6(SCN)2(CN)6⋅Ni(tpy)2] n ( 1), [Cu6(SCN)(CN)7⋅Ni(tpy)2] n ( 2) and [Cu6(CN)8⋅Ni(tpy)2] n ( 3) (tpy=2,2′:6′′,2′′-terpyridine). These infinite inclusion compounds were prepared via a solvothermal sulfur migration reaction with subtle modification to fine-tune the sulfur content. The chiroptical activity of single crystals, which arises from the intrinsically chiral net, was confirmed by X-ray diffraction and solid-state circular dichroism spectra. [ABSTRACT FROM AUTHOR]

Three 2D luminescent isomeric porous coordination polymers are synthesized and characterized. Their luminescence properties can be modified by grinding and they can act as mechanochromic materials and their properties are probably related to the weak interactions of cuprophilicity and π-π interactions. [ABSTRACT FROM AUTHOR]

• Two new coordination polymers were prepared. • There is antiferromagnetic coupling between neighboring metal ions in the two compounds. • Their treatment activity on the chronic renal failure was assessed, and associated mechanism was discussed. Two new coordination polymers based on the transition-metal centers namely, {[Co(L)]•DMF} n (1) and {[Cu 2 (L) 2 ]•DMF} n (2) have been established via reaction of a bi-functional ligand 4-{bis(4-benzoic)amino}-4 H -1,2,4-triazole (H 2 L) with corresponding metal salts in a mixed solvent system of DMF and H 2 O. The structural analysis results show that the complex 1 belongs to the P 2 1 2 1 2 1 space group with a (6,6)-connected nia -type net and the complex 2 is locates in the monoclinic space group of P 2 1 / n with a novel (5,5,6,6)-connected network. Magnetic investigations have indicated that there is antiferromagnetic coupling between neighboring metal ions in the two compounds. Their treatment activity on the chronic renal failure was assessed, and associated mechanism was discussed. Firstly, the determination of 24-hour urine protein was conducted to evaluate the protective activity of the new compounds. Then, the angiotensinogen expression and the monocyte chemoattractant protein-1 (MCP-1) expression in the renal endothelial cells was determined via the real time reverse transcription polymerase chain reaction. [ABSTRACT FROM AUTHOR]

A copper(i)/copper(ii)–salen coordination polymer prepared by solvothermal reactions shows prominent bimetallic catalytic activities towards three-component Strecker reactions and photodegradation of organic dyes under visible-light illumination. [ABSTRACT FROM AUTHOR]

A supramolecular dual emissive system incorporating two classical copper(i)-cluster-based luminophores, namely, Cu4I4and Cu3Pz3(Pz = pyrazolate), is reported. The targeted luminescent coordination polymer exhibits reversible thermochromism spanning from green to orange-red. [ABSTRACT FROM AUTHOR]

The solvothermal in situdouble cycloaddition reaction of 2-cyanopyrimidine, Cu2O and NaN3with aqueous ammonia additive generated a two dimensional copper(i) coordination polymer with 5-pyrimidyl-tetrazolate, 3,5-bispyrimidyl-1,2,4-triazolate and the cyano group as the ligands. This reaction can be tuned to yield two dimensional coordination polymers solely based on tetrazolate or 1,2,4-triazolate ligands. [ABSTRACT FROM AUTHOR]

Bifunctional tetrakis(methylthio)-1,4-benzenedicarboxylic acid and Pb2+ions form a robust porous net featuring free-standing thioether groups that allow reversible uptake of HgCl2. [ABSTRACT FROM AUTHOR]