A {Zn4} cluster as a bi-functional luminescence sensor for highly sensitive detection of chloride ions and histidine in aqueous media

Abstract

Efficient luminescence sensor is judged as one most up-and-coming cure to combat environmental pollution. By combining precise structures and defined functional sites, luminescent coordinated metal clusters (LCMCs) can allow mechanism-based...

Two Co-Based Metal–Organic Framework Isomers with Similar Metal-Carboxylate Sheets: Turn-On Ratiometric Luminescence Sensing Activities toward Biomarker N-Acetylneuraminic Acid and Discrimination of Ga3+ and In3+

“…It is known that the energy LUMO–HOMO gap could to some extent determine how easily the electrons transfer. The smaller the energy gap, the easier the transfer and the stronger the reactivity. ,, As a consequence, the easier electron transfer may enhance the luminescence of the complexes in an acidic medium.…”

“…The smaller the energy gap, the easier the transfer and the stronger the reactivity. 39,50,51 As a consequence, the easier electron transfer may enhance the luminescence of the complexes in an acidic medium. Furthermore, the sensitivity of the two complexes toward typical acidic and alkaline gases was also tested.…”

“…We have been exploring novel luminescent MOF sensors for the detection of ions and biomarker molecules through turn-off or turn-on sensing. − Recently, we constructed one novel Cd-CP with ratiometric turn-on responses toward Al 3+ and Cr 3+ through significant color change and turn-off response toward Fe 3+ . To further extend our investigation, herein, we reported two Co-MOFs assembled from an amide-functionalized ligand and two isomeric nitrogen-containing ligands (Scheme S1), namely, {[Co­(L) 0.5 ( m -bimb)]·3H 2 O} n ( LCU-115 ) and {[Co­(L) 0.5 ( p -bimb)]·3H 2 O} n ( LCU-116 ) (H 4 L = N , N ″-(3,5-dicarboxylphenyl)­benzene-1,4-dicarboxamide; m -bimb = 1,3-bis­((1H-imidazol-1-yl)­methyl)­benzene, p -bimb = 1,4-bis­((1H-imidazol-1-yl)­methyl)­benzene).…”

Detection of Toxic Polychlorinated Biphenyls by Nanoporous Metal–Organic Frameworks

“…As a class of novel nanoporous materials, metal–organic frameworks (MOFs), constructed from metal ions/clusters with organic ligands through coordination bonding, have been widely used in the areas of gas storage and separation, , catalysis, , chemical sensing, , proton conduction, , drug delivery, , etc. Luminescent MOFs (LMOFs), a unique subclass of MOFs, have bloomed out as fluorescence sensors because of their unique optical property, adjustable pore structure, and specific analyte recognition ability. , It has been proved that LMOFs possess a sensitive response toward various environmental pollutants, such as antibiotics, veterinary drugs, mycotoxins, and many others. − However, to our knowledge, the detection of PCBs with MOFs as sensory materials has not been explored yet.…”

Two Stable Cd-MOFs as Dual-Functional Materials with Luminescent Sensing of Antibiotics and Proton Conduction

“…Multifunctional materials exhibiting multiple properties in a single crystalline material have attracted extensive attention in material science and chemistry. − Metal–organic frameworks (MOFs) are considered to be a promising platform for designing multifunctional materials. − ,− Due to the diversities of compositions including metal cations or clusters and bridging ligands, the structures and properties of MOFs can be relatively easily modulated and controlled by the synthetic conditions and selection of different structural units. ,,− Recently, multifunctional MOF materials with proton conduction and luminescent sensing properties have received more attention due to their potential usage in clean energy as well as environmental monitoring fields. − …”