A Novel d‐f Heterometallic Cd^II‐Eu^III Metal‐organic Framework as a Sensitive Luminescent Sensor for the Dual Detection of Ronidazole and 4‐Nitrophenol

Abstract

A novel three‐dimensional (3D) d‐f heterometallic metal‐organic framework (MOF) formulated as [EuCd1.5L2(H2O)3]·2H2O (1) [H3L = 5‐(4‐(tetrazol‐5‐yl)phenyl)isophthalic acid] was successfully synthesized and characterized. Structural analysis displays that 1 features a 3D (3, 12)‐connected framework constructed by [Eu2Cd3(tetrazole)4(COO)8] units. The powder X‐ray diffraction measurement of 1 immersed in different solvents reveals that 1 possess good solvent stability. It is worth noting that 1 displays highly selective detection for ronidazole (RDZ) and 4‐nitrophenol (4‐NP) through luminescence quenching. The possible mechanism of luminescent sensing is also well discussed.

Identification of folic acid and sulfaquinoxaline using a heterometallic Zn–Eu MOF as a sensor

“…Moreover, luminescent HMOFs enrich the diversities of structures and affect their optical properties. 18 The d 10 block transition metal complex can be used as a sensitizer to enhance the lanthanide emission, in which well-designed organic ligands may be used to unite d-block complexes and Ln 3+ ions into HMOFs to reinforce their luminescence through d−f energy transfer. 19,20 Thus, HMOFs can exhibit outstanding fluorescent properties between heterometallic metal units, and they may potentially open up a new approach for the preparation of advanced luminescence materials.…”

“…[21][22][23][24][25][26][27][28][29][30][31][32] However, the preparation and characterization of highly sensitive and selective sensors of HMOFs for the identification of organic molecules, such as amino acids, vitamins, and antibiotics, remain a challenging task for the domain of life science, medicine, etc. [33][34][35][36] For instance, folic acid (FA), as a water-soluble compound of the vitamin group, is widely found in the intestinal wall, liver, bone, and marrow tissue; it plays a critical role in protein synthesis, cell division, and physical growth in the human body. A lack of folic acid can lead to many diseases, such as neural tube malformation and megaloblastic anemia.…”

Isostructural Lanthanide Coordination Polymers with High Photoluminescent Quantum Yields by Effective Ligand Combination: Crystal Structures, Photophysical Characterizations, Biologically Relevant Molecular Sensing, and Anti-Counterfeiting Ink Application

“…On the basis of the τ 0 of the Tb-CP at 25 °C, the bimolecular quenching constant ( k q ) is calculated as 9.2 × 10 6 and 9.2 × 10 7 L·mol –1 ·s –1 by K SV = k q τ 0. Limit of detection LOD is further estimated by 3σ/ K (Table S6), , affording LOD = 0.72 μΜ for HT and LOD = 0.95 μΜ for HIAA. The comprehensive literature search has indicated that a CP-based fluorescence sensor for HT and HIAA has been less explored by far, except that a Eu III -based (3,4)-connected framework with 1D channels has been used to detect HT and HIAA (Table ).…”

State of the art methods and challenges of luminescent metal–organic frameworks for antibiotic detection

“…Some other Eu-based LMOFs were designed and utilized as luminescence indicators toward antibiotics by monitoring the characteristic peaks of Eu(III). [93][94][95][96] Similar with the Eu-based LMOFs, the Tb cation is another commonly used lanthanide due to the bright-green luminescence of Tb-based MOFs, which served as sensors for monitoring analytes. Zhu et al prepared a Tb-MOF, [Tb(TATMA) (H 2 O)•2H 2 O], by the coordination assembly of Tb(III) and 4,4′,4″-s-triazine-1,3,5-triyltri-m-aminobenzoate (H 3 TATMA).…”