Tuning Two-Dimensional Layer to Three-Dimensional Pillar-Layered Metal–Organic Frameworks: Polycatenation and Interpenetration Behaviors

Abstract

A two-dimensional honeycomb network of {[Zn 2 (bpydb) 2 (H 2 O) 2 ](DMA) 3 (H 2 O)} n (1) was solvothermally synthesized and structurally characterized. By employing 4,4′-bipyridine (bpy) as a pillar, two additional three-dimensional (3D) metal−organic frameworks (MOFs) of {[Zn 2 (bpydb) 2 (bpy)(EtO-H) 2 ](DMF)(EtOH)} n (2) and {[Zn(bpydb)(bpy)](DMA)-(EtOH) 6 } n (3) (bpydbH 2 = 4,4′-(4,4′-bipyridine-2,6-diyl) dibenzoic acid, DMA = N,N-dimethylacetamide, DMF = N,Ndimethylformamide) were obtained. MOF 2 displays a 3D pillarbilayered network generated from polycatenation of the 2D bilayers. By carefully adjusting the reaction condition, MOF 3 was harvested, showing a 2-fold interpenetrated (3,5)-connected hms net. The phase purity, thermal stability, and luminescent properties of the three MOFs were studied. In addition, N 2 and CO 2 adsorption behaviors of the activated 3 were investigated.

Retracted: 3D Porous Heterometallic Coordination Polymer for the Detection of Nitroaromatic Explosives and Inhibiting Human Cancer Cells Growth

“…Since the Sr 2+ and Cd 2+ ions are difficult to be reduced and oxidized due to their closed shell, so the observed emission for compound 1 could not be attributed to the ligand‐to‐metal charge transfer. Indeed, the ligand‐based charge transfer should be ascribed to the observed emission of 1 because emission peak of 1 is similar to that of H 2 bdc ligand . Compared to the free H 2 bdc ligand ( λ em = 421 nm and λ ex = 330 nm), compound 1 shows a red‐shift with 16 nm, which could be attributed to the intraligand π–π* charge transfer …”

Synthesis, structure and characterization of a layered coordination polymer based on Zn(ii) and 6-(methylmercapto)purine

“…As nucleobases contain multiple donor sites, they can act as ligands in coordination networks useful in medicine, industry, agriculture and coordination chemistry. 26 There are several examples of LCPs based on Zn [27][28][29][30][31][32][33][34][35][36][37] or nucleobases, [38][39][40][41][42][43][44] but just a few based on the Zn and nucleobase combination. 45,46 Here, we report the synthesis and characterization of a new LCP named UZAR-S12 (henceforth referred to as 1).…”

Moisture-Stable Zn(II) Metal–Organic Framework as a Multifunctional Platform for Highly Efficient CO2 Capture and Nitro Pollutant Vapor Detection

“…The organic ligand bpydbH 2 used in this work (Scheme 1) was synthesized by following the reported procedure. 29 Ultima IV diffractometer using Cu-Kα radiation. CH 4 , N 2 and CO 2 sorption data were measured on a Micromeritics 3Flex surface area analyzer.…”