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Recent advances in fluorescent gold nanocluster-based bioanalytical analysis and imaging in living cell.
Bioanalysis
January 2025
College of Chemistry, Beijing University of Chemical Technology, Beijing, China.
Ultrasmall and highly fluorescent gold nanoclusters (Au NCs) have been widely used for the construction of sensing and imaging platforms. Specifically, through a combination of surface functionalization and spectral analysis and/or imaging techniques, effective intracellular detection and imaging are realized. In this review, we summarize the recently adopted intracellular analysis and imaging events with Au NCs-based probes.
View Article and Find Full Text PDFPerylene diimide based fluorescent sensors for aqueous detection of perfluorooctane sulfonate (PFOS).
Anal Chim Acta
March 2025
Department of Materials Science and Engineering, University of Utah, Salt Lake City, UT, 84112, USA. Electronic address:
Background: Perfluorooctane sulfonate (PFOS), one of the most harmful members of the large group of per- and poly-fluoroalkyl substances (PFAS), is notorious for its environmental persistence, bioaccumulation, and toxic effects, raising serious environmental and health concerns. Developing rapid and sensitive methods to detect PFOS in water is critical for effective monitoring and protection against this hazardous chemical.
Results: In this study, we developed rapid and highly sensitive fluorometric sensors (PDI-2+ , PDI-6+ ) for detecting PFOS.
Integrating ex situ biomimetic extraction analyses into contaminated sediment assessment and management decisions.
Integr Environ Assess Manag
January 2025
Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Lubbock, TX, United States.
This study evaluated a novel ex situ passive sampling biomimetic extraction (BE) method to estimate toxic potency in sediments. Gas chromatography with flame ionization detection (GC-FID) analysis of polydimethylsiloxane fibers equilibrated with field sediments was used to quantify bioavailable polyaromatic hydrocarbons (PAHs) and other unresolved, site-specific contaminant mixtures. This method is biomimetic because contaminants partition to the fiber based on hydrophobicity and abundance, and GC-FID quantification accounts for all constituents absorbed to the fiber that may contribute to toxicity.
View Article and Find Full Text PDFFluorometric Turn Off Detection of Cu and Pd Ions Using 1-(Imidazo[5,1-a]isoquinolin-3-yl)naphthalen-2-ol.
Luminescence
January 2025
Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
The fused heterocycle 1-(imidazo[5,1-a]isoquinolin-3-yl)naphthalen-2-ol (LH) has been synthesized and characterized by spectroscopic methods. Probe LH upon irradiation with λ = 336 nm exhibited strong fluorescence with λ = 437 nm in MeOH/HEPES buffer (5 mM, pH = 7.4, 2:8, v/v).
View Article and Find Full Text PDFA rhodamine-conjugated fluorescent and colorimetric receptor for the detection of Cu ions: environmental utility and smartphone integration.
Anal Methods
January 2025
Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India.
A new rhodamine based turn on florescent probe ()-3',6'-bis(ethylamino)-2-(((6-methoxy-2-oxo-1,2-dihydroquinolin-3-yl)methylene)amino)-2',7'-dimethylspiro[isoindoline-1,9'-xanthen]-3-one (RME) was efficiently synthesized through a simple condensation reaction of 2-amino-3',6'-bis(ethylamino)-2',7'-dimethylspiro[isoindoline-1,9'-xanthen]-3-one and 6-methoxy-2-oxo-1,2-dihydroquinoline-3-carbaldehyde. The receptor RME is highly non-fluorescent and when copper ions (Cu ions) are added in DMF/water (1 : 2, v/v) medium, the receptor RME exhibits a specific "turn-on" colorimetric and fluorometric response. Moreover, RME binding with Cu ions produced a remarkable color variation that was perceptible to the human eye, changing from colorless to pink.
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