Unique Chiral Interpenetrating d–f Heterometallic MOFs as Luminescent Sensors

Abstract

One novel three-dimensional (3D) 3d-4f metal-organic framework (MOF), [TbZn(L)(CO3)2(H2O)]n (1) [HL = 4'-(4-carboxyphenyl)-2,2':6',2″-terpyridine], has been successfully synthesized and structurally characterized. Structural analysis shows that compound 1 features a unique chiral interpenetrating 3D framework for the first time. The resulting crystals of 1 are composed of enantiomers 1a (P41) and 1b (P43), as was clearly confirmed by the crystal structure and the corresponding circular dichroism (CD) analyses of eight randomly selected crystals. The investigations on CD spectra based on every single crystal clearly assigned the Cotton effect signals. The powder X-ray diffraction measurement of 1 after being immersed in common solvents reveals that 1 possess excellent solvent stability. Furthermore, luminescent studies imply that 1 displays highly selective luminescent sensing of aldehydes, such as formol, acetaldehyde, and propanal.

Similarities of Coordination Polymer and Dimeric Complex of Europium(III) with Joint and Separate Terpyridine and Benzoate

“…[ 22 ] Several gels containing cptpy – with Tb 3+[28,29] or Eu 3+[30] were also reported, as well as 3d‐4f heterometallic coordination polymers of cptpy – with lanthanides (including Eu 3+ ) [ 24,31 ] and transition metals, in which terpyridine is coordinated to the transition metal center and carboxylate to the lanthanide. [ 24,31–33 ] So far, mainly lanthanide trinitrates were used as reagents, and no single crystal structures have been obtained from halides together with the cptpy – ligand. We expected that the use of halides would result in the formation of the compounds bearing new structural motifs compared to nitrates.…”

A Novel d‐f Heterometallic CdII‐EuIII Metal‐organic Framework as a Sensitive Luminescent Sensor for the Dual Detection of Ronidazole and 4‐Nitrophenol

“…The similar mechanism of luminescent sensing has been proposed in the reported Ln‐MOFs materials. [26b], …”

Construction of a 3D porous Zn(II) compound with (3,4)‐connected topology: luminescent and gas sorption properties

“…As a new type of hybrid crystalline materials, metal-organic frameworks (MOFs) built from the metal ions or clusters with diverse organic ligands have attracted considerable scientific research interest owing to their huge potential applications in magnetism, chemical sensing, luminescence, catalysis, gas storage and separation, and so on. [1][2][3][4][5] Of particular interest is the construction of porous MOFs for gas storage and separation. [6][7][8] Compared with traditional adsorbent materials, such as zeolites, activated carbons, or diatomite, porous MOFs materials are more advantageous in terms of high surface area, adjustable pore size, as well as unique functional groups modified pore environment.…”