Acidity and Cd²⁺ fluorescent sensing and selective CO₂ adsorption by a water-stable Eu-MOF

Abstract

A new luminescent Eu-MOF from an amino-group modified tetracarboxylic acid ligand was designed, which could perform as an efficient pH acidity and Cd2+ PL sensor and CO2 selector.

A new family of lanthanide coordination polymers based on 3,3′-[(5-carboxylato-1,3-phenylene)bis(oxy)]dibenzoate: synthesis, crystal structures and magnetic and luminescence properties

“…7 F 1 , which implies that the Eu III cations in these complexes are located in lower symmetry coordination environments. The luminescence quantum yields of CP5 were determined to be 22% and the quantum yield of CP5 is slightly greater than for some Eu compounds reported previously (Abdelhamid et al, 2019;Liao et al, 2019).…”

Near-Infrared Emissive Lanthanide Metal–Organic Frameworks for Targeted Biological Imaging and pH-Controlled Chemotherapy

“…Lanthanide metal–organic frameworks (Ln-MOFs) are a kind of crystalline material structured by self-assembly of trivalent lanthanide series metal ions and organic ligands. , Ln-MOFs possess unique properties that combine the excellent fluorescence properties of lanthanide series metal sites with the intrinsic properties of MOFs, such as high porosity, structural tunability, a modifiable surface, and good biocompatibility. , Ln-MOFs have been considered as novel multifunctional materials in catalysis, gas separation, chemical sensing, bioimaging, and drug delivery. − Originating from the “antenna effect” between trivalent lanthanide ions and ligands, Ln-MOFs exhibit characteristic fluorescence emission with high intensity, high stability, possibly high quantum yield, considerable lifetime, and large Stokes shifts (>150 nm) . Some Ln 3+ ions (Gd 3+ , Eu 3+ , Tb 3+ , Dy 3+ , and Sm 3+ ) have been proven to emit more efficiently in the visible region, and some (Nd 3+ , Yb 3+ , Er 3+ , Ho 3+ , and Tm 3+ ) are more suitable for emitting in the near-infrared region. − It is noted that the research on Ln-MOFs in the visible-light region mainly focuses on Tb-MOFs and Eu-MOFs.…”

Three Lanthanide Metal‐Organic Frameworks Based on an Ether‐Decorated Polycarboxylic Acid Linker: Luminescence Modulation, CO2 Capture and Conversion Properties

“…[4][5][6] Therefore, lanthanide MOFs (Ln-MOFs) possessn ot only fascinating structures but also great unique application prospecta s functional materials. [7][8][9][10][11][12][13][14] Another peculity lies in that Ln-MOFs which are constructed from the same ligandsa nd different Ln 3 + ions are commonly isostructural, it provides ag reat chance to prepare doped Ln-MOFsb ym odifyingm olar ratio of Ln 3 + ions, and coming true ad esired colour emission. [15,16] However,t he synthesis and properties of Ln 3 + doped MOFs were not well performed.…”

“…The Ln 3+ metal components are also excellent candidates to construct unique luminescent materials for their large Stokes shift, narrow and intense band emission, high luminescent purity and long luminescent lifetimes . Therefore, lanthanide MOFs (Ln‐MOFs) possess not only fascinating structures but also great unique application prospect as functional materials . Another peculity lies in that Ln‐MOFs which are constructed from the same ligands and different Ln 3+ ions are commonly isostructural, it provides a great chance to prepare doped Ln‐MOFs by modifying molar ratio of Ln 3+ ions, and coming true a desired colour emission .…”