A5037967064- Luminescence Properties of Advanced Materials
- Luminescence and Fluorescent Materials
- Advanced Chemical Physics Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanoplatforms for cancer theranostics
- Laser-induced spectroscopy and plasma
- Advanced biosensing and bioanalysis techniques
- Diamond and Carbon-based Materials Research
- Spectroscopy and Quantum Chemical Studies
- Mass Spectrometry Techniques and Applications
- Plasmonic and Surface Plasmon Research
- Advanced Fluorescence Microscopy Techniques
- Photoreceptor and optogenetics research
- Photochemistry and Electron Transfer Studies
- Perovskite Materials and Applications
- Silicon Nanostructures and Photoluminescence
- Ion-surface interactions and analysis
- Nanoparticle-Based Drug Delivery
- Semiconductor materials and devices
- Photochromic and Fluorescence Chemistry
- Air Quality Monitoring and Forecasting
- 2D Materials and Applications
- Nanowire Synthesis and Applications
- Nonlinear Optical Materials Studies
- ZnO doping and properties
Korea Research Institute of Chemical Technology
2015-2024
Daejeon University
2015-2021
Kyung Hee University
2002-2020
Government of the Republic of Korea
2016-2018
Convergence
2016
A track record: Upconverting nanoparticles (UCNPs) were tracked in living HeLa cells and their active transport by motor proteins was visualized real time. The remarkable photostability of the UCNPs noninvasiveness near-infrared excitation allowed continuous observation for as long 6 h. Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted authors. Please note:...
Plasmonic nanostructures are widely studied and used because of their useful size, shape, composition assembled structure-based plasmonic properties. It is, however, highly challenging to precisely design, reproducibly synthesize reliably utilize with enhanced optical Here, we devise a facile synthetic method generate Au surface roughness-controlled nanobridged nanogap particles (Au-RNNPs) ultrasmall (≈1 nm) interior gap tunable roughness in controllable manner. Importantly, found that...
Lanthanide-doped upconverting nanoparticles (UCNPs, NaYF4:Yb(3+),Er(3+)) are well known for emitting visible photons upon absorption of two or more near-infrared (NIR) through energy transfer from the sensitizer (Yb(3+)) to activator (Er(3+)). Of emission bands (two green and one red band), it has been suggested that results competing upconversion pathways where non-radiative relaxation occurs after second (pathway A, (4)I15/2 → (4)I11/2 (4)F7/2 (2)H11/2 (4)S3/2 (4)F9/2 (4)I15/2) between...
Hinterher! Aufwärtskonvertierende Nanopartikel (UCNPs) wurden in lebenden HeLa-Zellen verfolgt, und ihr aktiver Transport durch Motorproteine wurde Echtzeit abgebildet. Die beachtliche Photostabilität der UCNPs die unschädliche Anregung im nahen Infrarot ermöglichten kontinuierliche Beobachtung lebender Zellen über einen Zeitraum von bis zu sechs Stunden.
Upconverting nanoparticles (UCNPs) have been studied as novel bioimaging probes owing to the absence of autofluorescence and excellent photostability. For practical applications, biocompatible UCNPs with high upconversion efficiency, bright luminescence, good colloidal stability are desirable. Herein, we report a quantitative systematic study on luminescence from set NaYF4:Yb3+,Er3+-based by varying crystal structures, core/shell surface ligands. Upconversion luminescent properties in...
In the field of nanomedicine, long term accumulation nanoparticles (NPs) in mononuclear phagocyte system (MPS) such as liver is major hurdle clinical translation. On other hand, NPs could be excreted via hepatobiliary excretion pathway without overt tissue toxicity. Therefore, it critical to develop that show favorable property. Herein, we demonstrated micelle encapsulated (64)Cu-labeled upconverting (micelle (64)Cu-NOTA-UCNPs) showed substantial by vivo positron emission tomography (PET)...
We demonstrate an upconverting plasmonic polarizer (UPP) as innovative platform that boosts the upconversion photoluminescence (UCPL) intensity and simultaneously modulates its polarization. The UPP features a metal-insulator-metal structure comprising nanoparticle-embedded SiO2 silver nanogratings. This is deliberately designed to utilize "asymmetric" plasmon resonance excitation, which confines only polarized light perpendicular excitation manifests at specific wavelengths, enabling...
Abstract The significance of lymphatic system has gathered great attention for immunotechnology related to cancer metastasis and immunotherapy. To develop innovative immunodiagnostics immunotherapy in vivo environments, it is very important understand excretion pathways clearance injected cargoes. Herein, we employed Tm 3+ -doped upconverting nanoparticles (UCNPs) with versatile advantages suitable long-term non-invasive optical imaging tracking. Transport retention the UCNPs were evaluated...
We report that the Raman signal from intracellular cargoes in live cells is sporadically observed and localized to a vesicular level.
In this study, we developed nano-mixture QSAR models using molecular dynamic (MD) descriptors to predict the toxicity of MONPs A. fischeri .
The photofragmentation by UV excitation of selectively prepared 1++ and 3++ tautomers protonated adenine is studied after at a 266 263 nm wavelengths with two different experimental set-ups located in Seoul Orsay. While the production an electrospray ion source now well accepted, calculations were used to ascribe preparation from cold dimers. fragmentation patterns are rather similar for both tautomers, suggesting mechanisms as statistical ground electronic state internal conversion.
NTIL is a fabrication method for plasmonic nanostructures by deposition of materials through the hole formed nanoindentation coated polymer layers. The response can be tailored patterned with tunable size and shape.
Abstract The crystal structure and phase stability of a host lattice plays an important role in efficient upconversion phenomena. In stable hosts, lanthanides doping should not generally change the itself. But when system drastically changes after lanthanide resulting multiple phases, accurate identification upconverting remains challenge. Herein, attempt to synthesize lanthanide‐doped NiMoO 4 by microwave hydrothermal method produced MoO 3 /Yb 2 Mo O 15 /NiMoO micro‐nano composite phosphor....
Time-resolved optical emission spectroscopy was employed to examine the temporal properties of a plume formed by laser ablation graphite target in He, N2, and Ar background gases. Time-dependent spectroscopic temperatures electronically excited C2 CN molecules generated at different gases pressures were derived simulation spectra. The rotational temperature significantly higher than vibrational temperature. This indicates that they are gas phase chemical reaction C2+N2→CN. At pressure above...
Nanoprobes used for biomedical applications usually require surface modifications with amphiphilic surfactants or inorganic coating materials to enhance their biocompatibility. We proposed a facile synthetic approach the phase transfer of hydrophobic magnetic nanoparticles by direct adherence fluorescent probes, without any chemical modifications, use as resonance (MR)/near-infrared (NIR) fluorescence bimodal imaging contrast agent. Indocyanine green (ICG) was not only an optical component...
Upconverting nanoparticles (UCNPs) have been extensively investigated for nanophotonics and biomedical applications. However, establishing a unified view of their emission characteristics to elucidate the underlying photophysics expand application fields these materials is great challenge due sophisticated internal energy transfer lack standardized single-particle spectroscopy (SPS) platform. Here, we present an SPS technique called multiband irradiance-dependent imaging (multiband SPIDI)....
In the present study, an enhanced solar light harvesting strategy based on wavelength conversion effect is suggested for dye-sensitized cells (DSSCs).
DNA-mediated simple synthetic methods enabled anisotropic plasmonic nanostructures with a tailorable intra-nanogap distance ranging from 0.9 to 4.0 nm be obtained.