A water-stable Eu-MOF as multi-responsive luminescent sensor for high-efficiency detection of Fe3+, MnO4− ions and nicosulfuron in aqueous solution

Luminescent lanthanide complexes based on 4,5-di(3,5-dicarboxylphenoxy)phthalic acid as enhanced fluorescence probes for highly selective detection of lead(ii) ions in water

“…Compared with the Eu 3+ /Tb 3+ complexes based on H 6 L, 43,44 the ligand in complexes 2-6 has only three carboxyl group deprotonation and still maintains uncoordinated carboxyl oxygen atoms that can further coordinate with other metal ions, so the complexes have the potential to identify metal ions. While in the Eu 3+ /Tb 3+ complexes, 43,44 the H 6 L ligand is completely deprotonated, and all the carboxyl oxygen atoms participate in the coordination. In addition, the angles between the benzene rings are almost perpendicular to each other, and the distances between adjacent benzene rings are also large, resulting in no π-π interaction in the structure (Fig.…”

“…[37][38][39][40][41] Herein, we report six two-dimensional (2D) and structurally novel complexes 1-6 ([Nd 2 (L)(H 2 O) 6 ] n •4.58n(H 2 O) (1), [Ln(H 3 L)(H 2 O)] n •0.5n(H 2 O), Ln = Sm (2), Eu (3), Gd (4), Tb (5), Eu 0.18 Gd 0.62 Tb 0.20 (6)), which are constructed by the aromatic polycarboxylic acid ligand 4,5-di (3,5-dicarboxylphenoxy) phthalic acid (H 6 L, shown in Scheme S1 †) featuring ether bonds. Although some complexes based on H 6 L ligand have been reported, [42][43][44] the ligand exhibits different protonation forms and coordination modes due to the different type and coordination environment of metal ions, resulting in structural diversity and property difference of the complexes. The structural and fluorescence properties of 1-6 have been studied in detail.…”

Synthesis, Crystal Structure, and Luminescent Sensing Properties of a Supramolecular 3D Zinc(II) Metal–Organic Framework with Terephthalate and Bis(imidazol-1-yl)methane Linkers

“…To overcome this limitation, there has been significant progress in the development of luminescent metal-organic frameworks (MOFs) for detecting various ions over the past few years [16][17][18][19][20]. Metal-organic frameworks (MOFs), also known as porous coordination polymers, are a novel type of crystalline porous material composed of inorganic metal ions or clusters and suitable ligands.…”

Recent Advances in Metal–Organic-Framework-Based Nanocarriers for Controllable Drug Delivery and Release

“…Recently, metal-organic frameworks (MOFs) have had good designability, well-defined pores, stimulus responsiveness, a large surface area, and a controllable morphology [16][17][18][19]. Various MOFs have been developed and utilized as functional materials in many applications, such as gas sorption [20][21][22][23][24][25], heterogeneous catalysts [26][27][28][29][30][31], luminescent sensors [32][33][34][35][36], electrochemical aptasensors [37][38][39][40][41], and in biomedical applications [42][43][44][45]. By virtue of the advantages of porous MOFs, they provide an available platform for highly efficient drug loading and controlled drug release in specific contexts.…”