Series of chiral interpenetrating 3d–4f heterometallic MOFs: Luminescent sensors and magnetic properties

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.…”

“…[ 22 ] Compounds of trivalent lanthanides and the ligand 4‐[2,2':6',2''‐terpyridin]‐4'‐yl‐benzoate (cptpy – ) are the isostructural coordination polymers 1 ∞ [Ln(cptpy) 3 ], [ 23–27 ] and 1 ∞ [EuCl(CH 3 COO)(cptpy)]. [ 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.…”

Terpyridine‐Based 3D Metal–Organic‐Frameworks: A Structure–Property Correlation

“…Frameworks of the type {[Ln(DSPT)(ox) 0.5 ] ⋅ H 2 O} n (where Ln=Tb and Eu) shows the strong response in the visible region at room temperature towards nerve agents, as their luminescence intensity has been found to be strongly quenched on the addition of diethylchlorophosphonate (DCP), but significantly less influenced by dimethylmethylphosphonate (DMMP), diethylcyanophosphonate (DCNP), and other selected organophosphates because the phosphorylation of the terpyridine nitrogen atoms by DCP destroys the “antenna effect”, resulting in quenching of the luminescence intensity of Ln III centers [31a] . Nitrobenzene (NB) sensing was explored over many organic, inorganic solvent molecules (MeOH, EtOH, isopropanol, N , N ‐dimethylformamide (DMF), CH 3 CN, THF, CH 2 Cl 2 , CHCl 3 , CCl 4 , DMSO) [21c, 39a] as the energy transfer occurred from the 3D tpy frameworks to electron‐deficient NB efficiently to quench the luminescence through the interspecies contacts [21c] . Similarly, 2,4,6‐trinitrophenol (TNP) is selectively sensed among other nitroaromatics by these frameworks [39a, 31b] .…”

“…The heterometallic (3d–4f) polymers may show unprecedented structural motifs and functions owing to the intrinsic properties of the two different metals. The carboxylic acid substituted terpyridine ligand followed the hard–soft concept and formed a series of Ln–Zn 3D frameworks [21c] . The observed antiferromagnetic behavior of this framework was attributed to the spin interaction through the carboxylate moiety.…”

Luminescent Zn (II)-Based Nanoprobes: A Highly Symmetric Supramolecular Platform for Sensing of Biological Targets and Living Cell Imaging

“…In the last 5 years, macro-sized Zn (II) based CPs were found to be successfully employable in sensing metals, small organic molecules, anions, and cations (Jia et al, 2016;Park et al, 2016;Gu et al, 2017;Zhang et al, 2017;Fan et al, 2020a). Lessons learned from the mono and bi-dimensional macroscopic tools aid the construction of highly engineered three-dimensional nano-architectures, able to cell permeation.…”