Three Coordination Polymers Based on Resorcin[4]arene as Effective Catalysts for the Knoevenagel Condensation Reaction and as Multifunctional Luminescent Sensors

Abstract

Three distinctive coordination polymers, [Zn2(m‐bdc)2(L)]⋅8DMF⋅2CH3OH (1), [Zn2(bpdc)2(L)]⋅9DMF⋅5CH3OH (2) and [Cd5Cl10(L)2]⋅6DMA⋅2CH3OH (3) were synthesized based on a novel pyridine‐functional resorcin[4]arene ligand (L=tetrakis(4‐mercaptopyridine‐ylmethyl) resorcin[4]arene, m‐H2bdc=1,3‐isophthalic acid, H2bpdc=biphenyl‐4,4′‐dicarboxylic acid and DMA=N,N‐dimethylacetamide). Among them, 1 and 3 exhibit charming two‐dimensional layers, while 2 gives a three‐dimensional framework. The performance of 1 and 3 was studied as solvent‐free heterogeneous catalysts for Knoevenagel condensation reaction, of which 1 shows an efficient catalytic capability for the reactions of various aldehydes with malononitrile. Apart from that, the luminescent performance of 1 and 3 in a series of anions and cations were also explored. Their quenching to Cr2O72−, CrO42− and Fe3+ ions makes 1 and 3 become promising luminescent sensors.

Tuning topological networks in MOFs by secondary‐building‐unit connection: syntheses, structures and luminescent properties of two Zn4‐cluster coordination polymers

“…The full d 10 nature of Zn ion will render the Zn-based CPs as potential candidate for luminescent materials. [41] Hence, we investigated the solid-state luminescence properties of two as-synthesized samples at room temperature (Figure 4). As previously reported, aromatic dicarboxylate ligands can exhibit solid-state photoluminescence at room temperature.…”

Two rare {M2(MoO4)2}n chain-containing molybdate-based metal–organic complexes with a bis-pyrazole-bis-amide ligand: fluorescent sensing and photocatalysis performance

“…leading to the uorescence quenching performance, which are similar to these previous reports. 38,39 Optical band gaps and photocatalytic activity…”

Resorcin[4]arene‐based Cu(I) binuclear and mononuclear complexes as efficient catalysts for azide‐alkyne cycloaddition reactions

“…[ 1–4 ] In this context, resorcin[4]arenes, as an important subset of calixarenes, have been widely utilized in the construction of complexes. [ 5–9 ] Resorcin[4]arenes feature bowl‐shaped aromatic cavities. Their upper and lower rims could be modified by various substituents.…”