The template-directed synthesis of a novel luminescent Tb-MOF material which could serve as a multi-responsive probe for sensing Fe3+ and Al3+ ions in water, as well as p-xylene and nitrobenzene in the vapor state is presented here.

The removal of C2H2 and C2H6 from C2H4 streams is of great significance for feedstock purification to produce polyethylene and other commodity chemicals but the simultaneous adsorption of C2H6 and C2H2 over C2H4 from a ternary mixture has never been realized. Herein, a robust metal–organic framework, TJT‐100, was designed and synthesized, which demonstrates remarkably selective adsorption of C2H2 and C2H6 over C2H4. Breakthrough experiments show that TJT‐100 can be used as an adsorbent for high‐performance purification of C2H4 from a ternary mixture of C2H2/C2H4/C2H6 (0.5:99:0.5) to afford a C2H4 purity greater than 99.997 %, beyond that required for ethylene polymerization. Computational studies reveal that the uncoordinated carboxylate oxygen atoms and coordinated water molecules pointing towards the pore can trap C2H2 and C2H6 through the formation of multiple C−H⋅⋅⋅O electrostatic interactions, while the corresponding C2H4–framework interaction is unfavorable.

An effective luminescent sensor for polychlorinated benzenes based on a new metal–organic framework was reported.

The development of logical visible-light-driven heterogeneous photosystems for water splitting is a subject of new research. As the first example of a noble-metal-free photocatalyst for both H 2 and O 2 production, a high-nuclear {Cu I 24 (μ 3 -Cl) 8 (μ 4 -Cl) 6 }-based polyoxometalate (POM)@metal−organic framework (MOF) (ZZULI-1) is rationally designed to serve as a robust dualfunctionalized photocatalyst. ZZULI-1 exhibits highly efficient photocatalytic H 2 evolution (6614 μmol g −1 h −1 ) and O 2 evolution (1032 μmol g −1 calculated for the first 6 min). The {Cu I 24 (μ 3 -Cl) 8 (μ 4 -Cl) 6 } clusters and mixed POMs not only work as the active units for H 2 and O 2 production, respectively, but also improve the effective electron transfer between the photosensitizer and ZZULI-1. The highly stable dual-functionalized ZZULI-1 affords new penetrations into the development of cost-effective high-nuclear cluster-based POM@MOFs for efficient solar-to-fuel generation.

An anionic metal-organic framework (MOF) {(NHMe)[Zn(μ-OH)(tpt)(TZB)](DMF)} (1, tpt = 2,4,6-tri(4-pyridyl)-1,3,5-triazine, HTZB = 4-(1H-tetrazol-5-yl)benzoic acid and DMF = N,N-dimethylformamide), with both nanosized cages and partitions, has been solvothermally synthesized, which can serve as a crystalline vessel to encapsulate the fluorescent dye rhodamine 6G (Rh6G) via a "bottle around ship" approach. As a result, the obtained dye@MOF composite system features a blue emission of the ligand at 373 nm and a red emission of Rh6G at 570 nm when dispersed in solution, which could be used for decoding the trace amount of 2,4,6-trinitrophenol (TNP) by referring the peak-height ratio of each emission, even in coexistence with other potentially competitive nitroaromatic analytes. Furthermore, the observed fluorescence responses of the composite toward TNP are highly stable and reversible after recycling experiments. To the best of our knowledge, this is the first example of an MOF-implicated self-calibrated sensor for TNP detection.