A water stable and highly fluorescent Zn(ii) based metal–organic framework for fast detection of Hg²⁺, Cr^VI, and antibiotics

Abstract

The development of luminescent metal−organic frameworks for effective sensing and monitoring of environmental pollutants are of great significance for human health and environmental protection. In this work, a novel water-stable...

2D Zn (II) Metal‐Organic Framework as a Highly Sensitive Luminescent Sensor for Detection of the Cr2O72− and Fe3+

“…MOF-1 contains d 10 electronic configuration (Zn 2 + metal) and πconjugated aromatic organic ligands (AIPA and bpe), so it is expected that MOF-1 could display excellent photoluminescent property. [19,20] As illustrated in Figure 4, the luminescent emission of MOF-1 is observed at 435 nm (λ ex = 360 nm), with redshift in comparison with the carboxylic acid ligand, which could be ascribed to the intra-ligand charge-transfer during the metal-ligand coordination process. [21] The luminescence spectra of MOF-1 406 (λ ex = 324) were investigated in aqueous solution which is similarly to the emission of solid-state (Figure S3).…”

Multifunctional Cadmium-Based Metal–Organic Frameworks for the Detection of Ion and Molecule in Aqueous Media

“…Iron deficiency or excess in the human body can cause a variety of diseases, such as skin diseases, insomnia, anemia, and so on. , Hexavalent chromium exists in the form of oxygenated compounds, CrO 4 2– and Cr 2 O 7 2– ions, which are carcinogenic in the human body. The excessive intake of Cr 2 O 7 2– ion can lead to liver and kidney damage, stomach ulcers, cramps, and even death. − TNP has attracted much attention in recent years as nitroaromatic compounds (NACs), which is more explosive than 2,4,6-trinitrotoluene (TNT). , Due to its strong toxicity, destructiveness, and carcinogenicity, TNP has become one of the important sources of wastewater and air pollution. − In addition, some antibiotic drugs, such as ceftriaxone sodium (CRO) and tetracycline (TC), have wide applications in the treatment and prevention of diseases, but the misuse of antibiotics has exacerbated the hazards to water, air, and humans. − Currently, antibiotic wastewater is directly discharged into the water without proper treatment, causing serious pollution. − In order to detect heavy metals, TNP, and antibiotics in wastewater, some techniques have been mainly used, for instance, electrochemical techniques, , X-ray techniques, high-performance liquid chromatography (HPLC), , and inductively coupled plasma mass spectrometry (ICP-MS) . However, these techniques have some drawbacks including expensive equipment, complicated operation, and being time-consuming.…”

An electrochemical impedimetric platform formed by a CNT@UiO-66 nanocomposite for quantitative analysis of oxytetracycline

“…1 Many countries have continuously issued numerous regulations to strictly control the use of antibiotics in many fields. Meanwhile, antibiotics can be detected by various approaches, including enzyme immunoassays, 2,3 fluorimetry sensors, 4–6 and chromatographic analysis. 7 It is worth noting that most testing methods restrict their wide and portable use for monitoring trace antibiotics, such as the poor sensitivity of fluorimetry sensors, the cumbersome operation of enzyme immunoassays, the large device volume and the high cost of gas or liquid chromatography-mass spectrometry.…”