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A Fluorescence Turn On–off-on Method for Sensitive Detection of Sn2+ and Glycine Using Waste Eggshell Membrane Derived Carbon Nanodots as Probe
Changes in Sn 2+ and glycine levels are relevant to many important physiological procedures in human health. However, investigation of their...
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A multifunctional “off–on” fluorescence probe for Al3+, Zn2+ and La3+ detection and cellular imaging applications
A simple multifunctional Schiff base fluorescence probe (E)- N ′-(2,4-dihydroxybenzylidene)-2-hydroxybenzohydrazide ( NDH ) was designed and synthesized...
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Sulphur and Nitrogen-Doped Carbon Dot-Based Fluorescence “Turn-Off” Sensor for 2,4,6-Trinitrophenol
In terms of both international public security and environmental protection, nitroaromatic explosive substances like 2,4,6-trinitrophenol (TNP)...
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An “on–off–on” electrochemiluminescence aptasensor based on a self-enhanced luminophore for ochratoxin A detection
A highly selective and sensitive “on–off–on” electrochemiluminescence (ECL) aptasensor based on a self-enhanced luminophore was developed for the...
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3-Pyrrolyl BODIPY Based Selective Cu2+ Ion “Off-On” Fluorescent Sensor
3-Pyrrolyl BODIPY-Schiff base conjugate was synthesized by treating α-formyl 3-pyrrolyl BODIPY with o -hydroxy aniline in ethanol at reflux followed...
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Fluorescence Sensor for Zearalenone Detection Based on Oxidized Single-walled Carbon Nanohorns/N-doped Carbon Quantum Dots-aptamer
Zearalenone (ZEN), a resorcinolactone toxin, which has been a potential threat to agricultural production and human health. In this study, a sample...
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On-off-on fluorescent sensor for glutathione based on bifunctional vanadium oxide quantum dots induced spontaneous formation of MnO2 nanosheets
Fluorescence sensing of glutathione by tailor-made chemical sensors is a prospective technique, which could provide simple, fast, and visual...
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Rapid, Sensitive, and Selective "ON–OFF" Detection of Fe3+ Ions Using Novel Acetalophanes and Their Applications in Real Samples
Three novel acetalophanes 1a-c have been designed, synthesized and characterized. The receptors 1b-c , featuring bulky anthracene groups, displayed...
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A sign-inverted receptive field of inhibitory interneurons provides a pathway for ON-OFF interactions in the retina
A fundamental organizing plan of the retina is that visual information is divided into ON and OFF streams that are processed in separate layers. This...
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“Off-on” fluorescence probe based on green emissive carbon dots for the determination of Cu2+ ions and glyphosate and development of a smart sensing film for vegetable packaging
An ultra-sensitive glyphosate nanosensor, based on carbon dots (CDs), was successfully developed with excellent long-wavelength emission (530 nm), a...
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‘Off–On’ determination of lead (Pb2+) and fluoride (F−) ion in fish and wastewater samples using N, S co-doped carbon quantum dots (N, S-CQDs)
Lead is a global priority pollutant. Its presence in aquatic systems is harmful to the human health. Fluoride is essential to the human body,...
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Highly fluorescent graphene quantum dots as “turn off–on” nanosensor for detecting toxic metal ions to organic pollutant
A high photoluminescence (PL)-based nanosensor based on graphene quantum dots (GQDs) is fabricated for the detection of toxic ions Ag + , Ce 2+ , Cd 2+ , Cu
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"Off/On” Fluorescent Probe based on Aggregation-Induced Quenching of ZnO-Quantum dots for Determination of Ara-C: Pharmacokinetic Applications, Adsorption Kinetics & Green Profile Assessment
Herein, a turn “Off/On” fluorescence probe based on ZnO quantum dots (ZnO-QDs) has been proposed and successfully utilized for the determination of...
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Methyl viologen induced fluorescence quenching of CdTe quantum dots for highly sensitive and selective “off-on” sensing of ascorbic acid through redox reaction
A turn-on fluorescent sensor based on CdTe quantum dots (QDs) is designed for highly sensitive and selective ascorbic acid (AA) detection. CdTe shows...
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Chiral amide-bonded hydroxyquinoline-substituted porphyrin fluorescent probes “off–on–off” pH sensing properties
Herein, a series of four amide-bonded hydroxyquinoline-substituted porphyrins have been prepared and characterized. Trends in the electronic...
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Ratiometric Sensing of Azithromycin and Sulfide Using Dual Emissive Carbon Dots: A Turn On-Off-On Approach
A novel ratiometric fluorescence probe was developed for the determination of azithromycin (AZM) and sulfide ions based on the differential...
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Multifunctional N,S-doped and methionine functionalized carbon dots for on-off-on Fe3+ and ascorbic acid sensing, cell imaging, and fluorescent ink applying
Fluorescent carbon dots (CDs) have been identified as potential nanosensors and attracted tremendous research interests in wide areas including...
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Development of a switching-type fluorescence sensor for the detection of boronic acid-containing agents
Since the therapeutic effect of boron neutron capture therapy is influenced by the intracellular distribution profile of boronoagents containing 10 B...
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A novel fluorescence sensor based on Al3+-mediated aggregation of gold nanoclusters for determination of citric acid in beverages
This paper revealed a new strategy for citric acid (CA) detection using aggregation-induced emission (AIE)-based fluorescent gold nanoclusters...
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Dual Fluorimetric Sensor for Tandem Detection of Cadmium and Cysteine: An Approach for Designing a Molecular Keypad Lock System
A fluorimetric sensor for dual and sensitive detection of Cd 2+ ion and Cysteine (based on 2-picolylamine platform) was developed.The sensor was...
