Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"UCNP"”.
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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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Upconversion luminescence in Er-codoped NaYF4 nanoparticles
… the "standard" type upconversion nanoparticles (UCNP) up to advanced UCNP with Gd3+ and Nd3+. Especially the impact of the crystal lattice structure as well as the resulting lattice phonons on the upconversion luminescence was investigated in detail based on different mixtures of cubic and …
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Identification of bacteria-regulated mechanisms for the pathogenesis of inflammatory bowel diseases (IBD) and development of upconverting nanoparticle (UCNP) luminescence imaging for the monitoring of gut bacteria
… propose to develop upconverting nanoparticles (UCNPs) luminescence imaging for monitoring of gut bacteria. Their unique property of photon upconversion enables them to convert low energy near-infrared (NIR) light into higher energy visible/NIR light offering greater tissue penetrance and …
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Upconversion Nanoparticles for pH Sensing and Imaging
… 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 this knowledge to the creation …
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Surface conjugation of upconversion nanoparticles via supramolecular host-guest self-assembly
… (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 application in the area of biological and physical science. However, the hydrophobic surface of UCNPs, …
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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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Upconverting nanoparticles: pushing theory and technology towards biomedical applications
… in living tissues. Upconverting nanoparticles (UCNPs) possess the desirable properties of absorbing and emitting NIR light, making them ideal contrast agents for biomedical applications. UCNPs have shown promise in deep tissue imaging, optogenetics, photodynamic therapy, temperature sensing, …
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Upconversion quantum yield and luminescence of beta-NaYF4:Yb3+,Er3+ nanoparticles
… (UC) nanometer (nm)-sized particles (UCNPs) exhibit the unique ability to emit one higher-energy photon after the sequential absorption of two or more near-infrared (NIR) photons. This UC luminescence (UCL) makes UCNPs very attractive for the use as optical probes in the biomedical …
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Drug Delivery Strategies Using Light Sensitive Molecules
… have reported using Upconverting Nanoparticles (UCNP) for the purpose of drug activation. The basis of this phenomenon is that the incidence of NIR light on these particles initiates multi-photon processes, eventually emitting UV/VIS wavelengths. The advantage of the NIR is that it deeply …
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Development of Nanoprobes for the Biological Imaging Using Positive Charged Quantum Dots and Upconversion Nanoparticles
… dots (QDs) or upconversion nanoparticles (UCNPs) exhibit interesting properties such as high photoluminescence, photostability, dual magnetic/optical modality. In this study, biocompatible and stable NPs were developed through the various surface modifications. NPs were functionalized by …