98%
921
2 minutes
20
Mercury contamination poses a profound threat to both environmental integrity and human well-being due to its extreme toxicity and strong bioaccumulative properties. Consequently, there is an increasing imperative for detection methodologies that exhibit exceptional sensitivity, selectivity, and efficiency in identifying mercury ions (Hg⁺) with rapid response times. Among the diverse array of analytical techniques, fluorescent and colorimetric sensors have emerged as highly promising due to their operational simplicity, remarkable sensitivity, and capability for real-time monitoring. This review delves into recent advancements in these sensing modalities, with a particular emphasis on cutting-edge detection mechanisms, nanomaterial-enhanced strategies, and innovative probe architectures. Finally, this review critically examines the prevailing challenges and explores future perspectives for these technologies in pivotal domains such as environmental surveillance, food safety, and biomedical diagnostics.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s10895-025-04356-1 | DOI Listing |
Luminescence
September 2025
Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
A triphenyl-imidazole end-capped donor-acceptor type potential molecular probe 3 has been designed and synthesized. Probe 3 upon interaction with different classes of metal ions/anions and NPPs displayed high selectivity with CN anion (LOD = 20.42 nM) through fluorescence "turn-Off" response and a naked-eye sensitive visible color change.
View Article and Find Full Text PDFFood Chem
September 2025
Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Fluoroquinolones are a popular class of antibiotics, which can lead to residues in food and the environment due to their abuse and illegal use. Consequently, this can pose a threat to human health. We hypothesized that a core-shell structured magnetic lanthanide metal-organic framework could serve as an effective dual-mode nanosensor, leveraging its antenna effect and peroxidase (POD)-like activity for the sensitive detection of fluoroquinolones.
View Article and Find Full Text PDFJ Hazard Mater
August 2025
Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China. Electronic address:
For the first time, long-wavelength red emission carbon dots (R-CDs) were prepared as ratiometric fluorescent and colorimetric dual-mode sensors for detecting ClO using a simple one-step hydrothermal method. R-CDs exhibited intrinsic red fluorescence at 587 nm. Upon interaction with ClO, a new and enhanced green fluorescence at 535 nm was observed, which was attributed to resulting from the oxidation of surface hydroxyl (-OH) groups to carbonyl (CO) groups.
View Article and Find Full Text PDFChemistry
September 2025
Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China.
The long-term visualization of intracellular Fe dynamics and lysosomal activity is crucial for investigating the physiological roles and functions of lysosomes during the growth of organisms. The lysosome-targeted fluorescent probe (RBH-EdC), derived from rhodamine-nucleoside conjugates, demonstrates a sophisticated dual-activation design: one is Fe⁺ response, triggering spirolactam ring-opening to form xanthine structures, resulting in ≥ 1000-fold fluorescence enhancement with visible colorimetric transition (colorless→pink). Another is pH sensitivity, demonstrating protonation-dependent fluorescence amplification at the dC at site N3 (pK= 2.
View Article and Find Full Text PDFMikrochim Acta
September 2025
Department of Surgical Oncology, Shaanxi Provincial People's Hospital, 256 Friendship West Road, Beilin District, Xi'an, 710068, Shaanxi, China.
Mycoplasma pneumonia, a primary aetiological agent of atypical pneumonia, necessitates the implementation of rapid point-of-care diagnostics. Lateral flow immunoassays (LFIAs) hold promise for point-of-care testing (POCT), yet their sensitivity levels are frequently constrained by probe affinity and matrix interference. We introduce an orientational labelling strategy that employs magnetic nanoparticles (MNPs) functionalized with staphylococcal protein A (SPA) to simultaneously enhance antibody orientation and facilitate magnetic enrichment.
View Article and Find Full Text PDF