Structural diversity, magnetic properties, and luminescence sensing of five 3D coordination polymers derived from designed 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid

Abstract

Five 3D CPs were constructed from a designed π-conjugated aromatic pentacarboxylate with diverse structures.

A 2D cadmium metal–organic framework: Synthesis, structure and luminescence sensing for chromate, permanganate, cupric, silver and ferric

“…The sensing abilities of 1•4H 2 O•DMAC for Cr 2 O 7 2− , CrO 4 2− and MnO 4 − are comparable with these of the documented MOFs. [ 21–30 ] For example, {[Cd(L)(BPDC)]·2H 2 O} n and {[Cd(L)(SDBA)(H 2 O)]·0.5H 2 O} n [L = 4,4′‐ (2,5‐bis (methylthio)‐1,4‐phenylene)dipyridine, H 2 BPDC = 4,4′‐biphenyldicarboxylic acid, H 2 SDBA = 4,4′‐sulfonyldibenzoic acid] showed the K sv of 6.4 × 10 3 M −1 and 4.97 × 10 3 M −1 for Cr 2 O 7 2− , the detection limit of 37.6 μM and 48 μM, respectively. [ 21 ] {[Cd (IPA)(L)]} n (H 2 IPA = isophthalic acid, L = 3‐pyridylcarboxaldehyde nicotinoylhydrazone) exhibited the K sv of 2.91 × 10 3 M −1 , and the detection limit of 2.26 μM for Cr 2 O 7 2− , the K sv of 1.30 × 10 3 M −1 and the detection limit of 2.52 μM for CrO 4 2−.…”

“…Therefore, the quenching mechanism of 1•4H 2 O•DMAC for Cr 2 O 7 2− , CrO 4 2− , MnO 4 − and Fe 3+ can be assumed to the energy‐transfer. [ 9–15,21–30 ] However, no overlap between the UV–visible absorption spectra of Cu 2+ , Ag + and other ions with the excitation and emission spectra of 1•4H 2 O•DMAC . N1s X‐ray photoelectron spectroscopy (XPS) studies showed that the N1s peaks from triazole nitrogen atoms in 1•4H 2 O•DMAC were at 399.8, 401.8 and 405.2 eV (Figure 13).…”

“…A number of luminescence MOF sensors have been documented for detect Cr 2 O 7 2− , CrO 4 2− or MnO 4 − . [ 21–30 ] For example, Zheng and coworkers reported that two Cd‐MOFs are excellent probes for Fe 3+ , CrO 4 2− , and Cr 2 O 7 2− . [ 21 ] Zhang and coworkers synthesized a Cd‐MOFs which displays a prominently selective and sensitive response to Cr 3+ , CrO 4 2− , and Cr 2 O 7 2− in aqueous media.…”

“…[ 25 ] Fan and coworkers synthesized three Cd coordination polymers which are promising luminescence sensors for the detection of CrO 4 2− and Cr 2 O 7 2− in aqueous solution. [ 26 ] One Cd coordination polymer synthesized by Fan and coworkers is a bifunctional sensor for detection Cr (VI) anions and 2,6‐dichloro‐4‐nitroaniline. [ 27 ]…”

A twofold interpenetrating two-dimensional zinc(II) coordination polymer: synthesis, crystal structure and physical properties

“…In recent years, coordination polymers (CPs) as a family of molecular materials have attracted increasing attention and become one of the most promising research areas due to their fascinating topologies and versatile functionalities in, for example, gas adsorption, the catalytic degradation of organic dyes, hydrogen storage, sensor applications, separation applications and other areas (Cui et al, 2012;Du et al, 2014;Fan et al, 2018Gagnon et al, 2012;Zhang et al, 2014Zhang et al, , 2019Zou et al, 2014). It is well known that the various structures and properties of CPs can be affected by many factors, including temperature, solvent systems, pH, choice of organic ligands and types of metal ions (Lv et al, 2017;Wu et al, 2016).…”