Multifunctional Zinc Metal–Organic Framework Based on Designed H₄TCPP Ligand with Aggregation-Induced Emission Effect: CO₂ Adsorption, Luminescence, and Sensing Property

Abstract

A new rigid and symmetrical tetracarboxylic ligand 2,3,5,6-tetrakis­(4-carboxyphenyl)­pyrazine (H4TCPP) with aggregation-induced emission effect has been designed and synthesized. By using such a ligand, a novel multifunctional metal–organic framework Zn-TCPP has been successfully constructed. The cross-linkage of dinuclear Zn2(COO)4 clusters and organic TCPP4– ligands results in the three-dimensional channel structure of Zn-TCPP, which has a four connected lvt topology with the point symbol of {42.84}. Zn-TCPP not only displays bright blue luminescence arising from the matrix coordination-induced emission effect of the TCPP4– ligand, but also exhibits effective detection for picric acid and Fe3+ ions. In addition, the activated Zn-TCPP possesses a highly porous framework with a Brunauer–Emmett–Teller surface area of 984 m2 g–1 and CO2 adsorption capacity up to 135 cm3 g–1 at 273 K and 732 mmHg. This work represents a successful example of constructing metal–organic frameworks with desired functions based on the designed organic ligand.

A metal–organic gel‐based fluorescent chemosensor for selective Al3+ detection

“…However, the technical detection instrumentation is expensive and the operation steps are complicated. In recent years, fluorescent chemosensors have received much attention due to their rapidity, convenience and analytical sensitivity . In respect to the detection of Al 3+ , some fluorescent chemosensors have been developed.…”

A stable pillared metal–organic framework constructed by H4TCPP ligand as luminescent sensor for selective detection of TNP and Fe3+ ions

“…In our previous work, a paddlewheel Zn‐TCPP MOF [H 4 TCPP = 2,3,5,6‐tetrakis(4‐carboxyphenyl)pyrazine] was successfully constructed. The MOF constructed had excellent fluorescent properties as a result of the aggregation‐induced emission (AIE) effect of the TCPP 4− ligand . However, the practical applications of Zn‐TCPP are limited in aqueous solution due to their relative poor water stability because the relatively weakly bound Zn 2 (COO) 4 cluster and coordinated N,N ‐dimethylformamide (DMF) molecules are replaced by other small coordinating molecules (such as water vapor in air), and the framework may be subjected to unrecoverable collapse .…”

AIE Infinite Coordination Polymer for Phosphate Ion Detection via Aggregation State Modulation

“…[17][18][19][20][21][22][23][24][25][26][27] One of the methods to construct fluorescent CPs is introducing organic ligands with aggregation-induced emission (AIE). [28][29][30][31][32][33][34] AIE ligands are rigidified in the framework structures of MOFs, and thus, the bright fluorescence originated from them is observed. [35] A series of AIE CPs have been constructed up till now, and they have been applied to the detection of various substances, [28][29][30][31][32][33][34] such as metal ions, [28,29] explosives, [28,30] pesticides, [33] and antibiotics.…”

“…[28][29][30][31][32][33][34] AIE ligands are rigidified in the framework structures of MOFs, and thus, the bright fluorescence originated from them is observed. [35] A series of AIE CPs have been constructed up till now, and they have been applied to the detection of various substances, [28][29][30][31][32][33][34] such as metal ions, [28,29] explosives, [28,30] pesticides, [33] and antibiotics. [34] Electron and energy transfers are the common strategies to design fluorescent probes with AIE CPs, which lead to the phenomenon of fluorescence quenching.…”