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Showing 1 to 10 of 10 for “"upconversion nanoparticles"”.
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Upconversion Nanoparticles for pH Sensing and Imaging
… range of these fluorescers. The ability of upconversion nanoparticles (UCNPs) to overcome these challenges through their unique optical properties (NIR excitation, long lifetimes) motivated this work to further the understanding of interactions between particle and pH dye before applying …
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Anisotropic surface functionalization and applications of upconversion nanoparticles
Lanthanide-doped upconversion nanoparticles (UCNPs) step-wise convert near-infrared adsorbed light into visible emitted light. Monodispersed UCNPs have a large anti-Stokes shift, sharp emission and long excited-state lifetimes. The controlled synthesis of their heterogeneous nanostructures can …
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Surface conjugation of upconversion nanoparticles via supramolecular host-guest self-assembly
… hold the key to driving many purpose-synthesized nanoparticles into real-world applications. Lanthanide (Ln) ions doped upconversion nanoparticle (UCNP) is a good example: while it delivers a great promise as molecular probes, sensors, drug carriers and light transducers for a library of …
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EXPLORING HETEROSTRUCTURED UPCONVERSION NANOPARTICLES: FROM RATIONAL PARTICLE ENGINEERING TO BIOMEDICAL APPLICATIONS
Upconversion nanoparticle (UCNP)-based photodynamic therapy (PDT) with unique anti-stokes luminescence features are of great interest. UCNP-based PDT affords greater tissue penetration depths than that of visible lights and serves as suitable nanoplatforms carrying photosensitizers as well. …
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Development of Nanoprobes for the Biological Imaging Using Positive Charged Quantum Dots and Upconversion Nanoparticles
Nanoparticles (NPs) have unique physicochemical properties due to the quantum confinement effect. Semiconductor quantum dots (QDs) or upconversion nanoparticles (UCNPs) exhibit interesting properties such as high photoluminescence, photostability, dual magnetic/optical modality. In this study, …
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Upconversion luminescence in Er-codoped NaYF4 nanoparticles
… fluoride (NaYF4) represents an exciting class of upconversion nanomaterials (UCNM) which are suitable to bring forward developments in biomedicine and -biodetection. Despite the fact that among various fluoride based upconversion (UC) phosphors lanthanide doped NaYF4 is one of the most studied …
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Geometry Dependent Plasmonic Activities of a Self-assembled Hexagonal Lattice and a Periodic Hexagonal Lattice with Gold Nanopillars
… Future research can include measurement of upconversion enhancement by coating a self-assembled hexagonal lattice with upconversion nanoparticles in PMMA over.</p>
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Digital Profiling of Circulating Extracellular Vesicles at Single-Upconversion Nanoparticle Sensitivity and Resolution
… development, bio-conjugation and application of upconversion nanoparticles (UCNPs). In chapter 2, we apply UCNPs for direct enumeration of single CD9 and EpCAM positive EVs (CD9+EpCAM+EVs). The achieved single-molecule sensitivity results in a femtomolar detection limit (1.8 × 106 EVs mL-1), …
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The Design, Synthesis and Characterization of Lanthanide-based Nanomaterials and Their Use in 3D Biological Imaging and Radiation Dosimetry
… relative intensities of the emissive bands in upconversion nanoparticles (UCNPs) (2) the development of a 3D imaging modalities that leverage the unique photophysical properties of upconverting nanomaterials and (3) the application of scintillating nanoscale radiation detection materials as an …
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In vitro selection of DNAzymes selective for monovalent metal ions and their development as sensors in living cells and organisms
… photocaged DNAzyme sensors onto lanthanide-doped upconversion nanoparticles (UCNPs), a deep tissue penetrating NIR light was converted into 365 nm emission for DNAzyme sensor activation and metal ion detection. Genetically encoded fluorescent proteins (FPs) have been applied for metal ion …