A fluorescent covalent organic framework with a brick-wall topology for the detection of Cu2+ promoted by the associated mechanism

Agro-Waste Valorization into Carbonaceous Eco-Hydrogel: A Circular Economy and Zero Waste Tactic for Doxorubicin Removal in Water/Wastewater

“…Similarly, the O 1s observed at 528 and ∼529.75, ∼529.6, 530.07–531.18, and ∼533.08 eV corresponded to metal O, OH, OC, CO, and C–O bonds, respectively; the functional groups were also observed by FTIR analysis (Figure ). Moreover, the N 1s spectrum revealed peaks at ∼395, ∼397.4, ∼397.5–397.65, ∼398.6, ∼397.28, and ∼400.18 eV corresponding to N–N, N–C, N–H, pyridinic N (N-6), N–H, and C–N 3 bonds, respectively. Similarly, the Si 2p spectrum appeared at 100.8–103.78 eV corresponding to Si–C and Si–O–C bonds, respectively.…”

“…Additionally, the peak deconvolution and related binding energies metal O, 45 OH, 46 O�C, 47 C�O, 48 and C−O 49 bonds, respectively; the functional groups were also observed by FTIR analysis (Figure 4). Moreover, the N 1s spectrum revealed peaks at ∼395, ∼397.4, ∼397.5−397.65, ∼398.6, ∼397.28, and ∼400.18 eV corresponding to N−N, 50 N−C, 51 N−H, 52 pyridinic N (N-6), 53 N−H, 54 BET Analysis. The surface area and specific pore size distribution of MSAC, GE-SA, and MSAC@GE-SA (Table 2) were investigated by using a BET analyzer.…”

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

“…Copper is an essential trace element and active component in the human body and plays an important role in signal pathways, multiple cell matrices, and other varieties of chemical, biological, and environmental systems [1][2][3]. It is an important catalytic cofactor for many metalloenzymes, including tyrosinase, ceruloplasmin, cytochrome, superoxide dismutase c-oxidase, and carbon monoxide dehydrogenases [4].…”

“…The fluorometric probes for recognizing Cu 2+ ions have gained more and more attention in recent years; they have become a powerful sensing tool due to their easy operation, fast response time, high sensitivity, excellent selectivity, and technical simplicitywith an obvious signal that can be seen with the naked eyeand potential applications in biological and environmental systems [10,11]. Various small molecule fluorophores have been designed as probes to detect heavy metal ions based on fluorescence change; for example, single organic fluorophore molecules [12,13], fluorescent polymers [14], quantum dots [15], and covalent organic frameworks [2]. However, most of these fluorescent methodologies might be disturbed by changes in environmental conditions like the pH and other paramagnetic metal ions and cannot eliminate interference from other metal ions effectively, which greatly limits their potential applications.…”