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Triplet–triplet annihilation photon upconversion-mediated photochemical reactions
Photon upconversion is a method for harnessing high-energy excited states from low-energy photons. Such photons, particularly in the red and...
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Recent Advances in Triplet–Triplet Annihilation Upconversion for Bioimaging and Biosensing
Photon upconversion is an anti-Stokes process that converts low-energy photons into high-energy photons. The use of upconversion luminescence can...
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The Study of Upconversion Emission Fine-Tuning in Lanthanide-Doped NaYF4 Nanoparticles
Abstract—We report upconversion emission multicolor tuning based on mixing two kinds of lanthanide-doped NaYF 4 nanoparticles. The upconversion...
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Upconversion Nanoparticle-Organic Dye Nanocomposites for Chemo- and Biosensing
The emerging nanocomposite of lanthanide-doped upconversion nanoparticles (UCNPs) and organic dyes (ODs), which combines the advantages of each...
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Tumor-associated antigen-specific cell imaging based on upconversion luminescence and nucleic acid rolling circle amplification
AbstractTumor-associated antigen (TAA)–based diagnosis has gained prominence for early tumor screening, treatment monitoring, prognostic assessment,...
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A DNAzyme-assisted near-infrared upconversion fluorescence sensing strategy for ultra-sensitive, and rapid quantification of uranyl
Presented is an infrared-induced sensor constructed of upconversion nanoparticles and DNAzyme for ultra-sensitive, and rapid detection of uranyl...
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Effect of heat treatment temperature on the morphology and upconversion properties of LaF3:Yb,Er nanoparticles
LaF 3 :5%Yb 3+ ,0.5%Er 3+ upconverting nanoparticles were synthesized with co-precipitation method and heat treated at temperatures 300–600 °C. The...
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Investigation of Upconversion Luminescence Attenuation in Aqueous Solutions Under 980 nm and 808 nm Irradiation
Lanthanide ions-doped upconversion nanoparticles (UCNPs) have shown great potential in various biomedical applications. However, the upconversion...
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Efficient photon upconversion enabled by strong coupling between silicon quantum dots and anthracene
Hybrid structures formed between organic molecules and inorganic quantum dots can accomplish unique photophysical transformations by taking advantage...
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A Fluorescein Derivative Chemosensor Combined with Triplet–Triplet Annihilation Upconversion System for Ratiometric Sensing of Cysteine
A derivative of fluorescein, fluorescein O,O-diacrylate (FODA), was utilized in a triplet–triplet annihilation upconversion (TTA-UC) system to...
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T790M mutation upconversion fluorescence biosensor via mild ATRP strategy and site-specific DNA cleavage of restriction endonuclease
A unique combination of a specific nucleic acid restriction endonuclease (REase) and atom transfer radical polymerization (ATRP) signal amplification...
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A universal CRISPR-Cas14a responsive triple-sensitized upconversion photoelectrochemical sensor
It has recently been discovered that, like other members of the Cas family (12a and 13a), the clustered regularly interspaced short palindrome repeat...
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Synthesis and Characterization of a KBаLu(MoO4)3:Er3+/Yb3+ Upconversion Phosphor
Abstract—A ternary molybdate with the composition KBаLu(MoO 4 ) 3 and a monoclinic scheelite-like structure has been synthesized. Codo** KBаLu(MoO 4 ) 3 ...
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Photosensitizing deep-seated cancer cells with photoprotein-conjugated upconversion nanoparticles
To resolve the problem of target specificity and light transmission to deep-seated tissues in photodynamic therapy (PDT), we report a cancer...
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Near-infrared mediated orthogonal bioimaging and intracellular tracking of upconversion nanophotosensitizers
Although upconversion photodynamic therapy (PDT) has gained extensive interests in disease treatment, the intracellular migration pathway of...
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Upconversion nanoparticles-based background-free selective fluorescence sensor developed for immunoassay of fipronil pesticide
In this study, high luminous efficiency, sensitive and specific fluorescent immunosensor was proposed for the detection of fipronil in spinach...
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Upconversion luminescence nanosensor for detection of Fe3+ and phosphate ion based on the inner-filter effect
In this work, an upconversion luminescence (UCL) nanosensor for fast detection of ferric ion (Fe 3+ ) and phosphate ion (Pi) is developed based on the...
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Electron upconversion in reactions of 1,2,4-triazoline-3,5-dione
During the electroreduction of 4-phenyl-1,2,4-triazoline-3,5-dione under aprotic conditions, a chain reaction of its transformation to triazolo[1,2- a ]...
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Engineered lanthanide-doped upconversion nanoparticles for biosensing and bioimaging application
Various fluctuations of intracellular ions, biomolecules, and other conditions in the physiological environment play crucial roles in fundamental...
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A point-of-care aptasensor based on the upconversion nanoparticles/MoS2 FRET system for the detection of Pseudomonas aeruginosa infection
The rapid detection of Pseudomonas aeruginosa ( P. aeruginosa ) is of great significance for the diagnosis of medical infection. In view of the above,...
