|生化机理||When this is reacted with aromatic aldimines, followed by oxidants, it produces vicinal diimine compounds.|
|个人防护设备||dust mask type N95 (US),Eyeshields,Gloves|
The Y(2)O(3) phosphor powder codoped with Nd(3+):Yb(3+) ions have been synthesized through optimized combustion route. Crystalline structures of the prepared samples have been investigated by powder X...Read More
Change in structural morphology on addition of ZnO and its effect on fluorescence of Yb(3+)/Er(3+) doped Y(2)O(3).
Yb(3+)/Er(3+) codoped Y(2)O(3) phosphor and its composite with ZnO have been synthesized by combustion method. Morphology of the materials has been investigated using X-ray diffraction pattern (XRD) a...Read More
Uniform and well-dispersed YbVO4 hierarchical nanoarchitectures: synthesis and luminescence properties.
The YbVO4 micro-doughnuts were successfully fabricated by a facile hydrothermal method. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) spectra, scanning electron microscopy (...Read More
Magnetic/upconversion luminescent mesoparticles of Fe(3)O(4)@LaF(3):Yb(3+), Er(3+) for dual-modal bioimaging.
Multifunctional magnetic/upconversion luminescent mesoparticles, consisting of a Fe(3)O(4) nanoparticle core and a LaF(3):Yb(3+), Er(3+) nanocrystal shell, have been developed using a facile co-precip...Read More
Long-circulating Gd(2)O(3):Yb(3+), Er(3+) up-conversion nanoprobes as high-performance contrast agents for multi-modality imaging.
Due to their unique electric, magnetic, and optical properties, engineered nanostructures have been applied to provide diagnostic, therapeutic, as well as prognostic information about the status of di...Read More
Phase and size controllable synthesis of NaYbF4 nanocrystals in oleic acid/ionic liquid two-phase system for targeted fluorescent imaging of gastric cancer.
Upconversion nanocrystals with small size and strong fluorescent signals own great potential in applications such as biomolecule-labeling, in vivo tracking and molecular imaging. Herein we reported th...Read More
Hydrothermal synthesis of NaLuF4:153Sm,Yb,Tm nanoparticles and their application in dual-modality upconversion luminescence and SPECT bioimaging.
Upconversion luminescence (UCL) properties and radioactivity have been integrated into NaLuF(4):(153)Sm,Yb,Tm nanoparticles by a facile one-step hydrothermal method, making these nanoparticles potenti...Read More
In contrast to Yb/Al-doped fibers, the influence of very low Tm(2)O(3) concentrations (≥ 0.1 mol-ppm) on photodarkening (PD) is clearly detectable in Yb/P-doped fibers that are known to show little ...Read More
An innovative route to tune upconversion (UC) emission in β-NaYF(4):Yb(3+)/Tm(3+) nanorods through codoping a third rare-earth ion upon continuous wave excitation near 976 nm is reported. The depende...Read More
Growth and spectral assessment of Yb(3+)-doped KBaGd(MoO4)3 crystal: a candidate for ultrashort pulse and tunable lasers.
In order to explore new more powerful ultrashort pulse laser and tunable laser for diode-pumping, this paper reports the growth and spectral assessment of Yb(3+)-doped KBaGd(MoO(4))(3) crystal. An Yb(...Read More
Multifunctional magnetic-fluorescent eccentric-(concentric-Fe3O4@SiO2)@polyacrylic acid core-shell nanocomposites for cell imaging and pH-responsive drug delivery.
Multifunctional fluorescent-magnetic pH-responsive eccentric-(concentric-FeO@SiO)@polyacrylic acid core-double shell nanocomposites (NCs) have been prepared for simultaneous cell imaging and pH-respon...Read More
Novel multifunctional NaYF(4):Er(3+),Yb(3+)/PEGDA hybrid microspheres: NIR-light-activated photopolymerization and drug delivery.
By utilizing multicolor upconversion luminescence of rare earth-doped nanophosphors (UCNPs), NIR-light-activated photopolymerization and controlled drug delivery is achieved for PEGDA hydrogels. The l...Read More
RGD Peptide-Conjugated Multimodal NaGdF4:Yb3+/Er3+ Nanophosphors for Upconversion Luminescence, MR, and PET Imaging of Tumor Angiogenesis.
Multimodal nanoparticles have been extensively studied for target-specific imaging and therapy of various diseases, including cancer. In this study, radiolabeled arginine-glycine-aspartic acid (RGD)-f...Read More
Platinum (IV) pro-drug conjugated NaYF4 :Yb(3+) /Er(3+) nanoparticles for targeted drug delivery and up-conversion cell imaging.
A folic acid targeted anticancer drug delivery system based on Pt (IV) complexes pro-drug conjugated up- conversion NaYF(4) :Yb(3+) /Er(3+) nanoparticles has been developed. The platinum (IV) complexe...Read More
Mid-infrared spectroscopic properties and energy transfer of Er3+/Yb3+ co-doped bismuth germanate glass.
An Er3+/Yb3+ co-doped bismuth germanate glass is synthesized and analyzed. The radiative characteristics and mid-infrared spectroscopic properties are investigated under excitation of a conventional 9...Read More
Determination of ammonia in water based on chemiluminescence resonance energy transfer between peroxymonocarbonate and branched NaYF4:Yb3+/Er3+ nanoparticles.
The ultraweak chemiluminescence (CL) from the reaction of hydrogen peroxide and carbonate is strongly enhanced by the branched NaYF(4):Yb(3+)/Er(3+) nanoparticle (NP) in the presence of aqueous ammoni...Read More
Frequency comb based on a narrowband Yb-fiber oscillator: pre-chirp management for self-referenced carrier envelope offset frequency stabilization.
Laser frequency combs are normally based on mode-locked oscillators emitting ultrashort pulses of ~100-fs or shorter. In this paper, we present a self-referenced frequency comb based on a narrowband (...Read More
We both theoretically and experimentally investigate the optimization of femtosecond Yb-doped fiber amplifiers (YDFAs) to achieve high-quality, high-power, compressed pulses. Ultrashort pulses amplifi...Read More
New reactive, divalent lanthanoid formamidinates [Yb(Form)(2) (thf)(2) ] (Form=[RNCHNR]; R=o-MeC(6) H(4) (o-TolForm; 1), 2,6-Me(2) C(6) H(3) (XylForm; 2), 2,4,6-Me(3) C(6) H(2) (MesForm; 3), 2,6-Et...Read More
Light-Harvesting Ytterbium(III)-Porphyrinate-BODIPY Conjugates: Synthesis, Excitation-Energy Transfer, and Two-Photon-Induced Near-Infrared-Emission Studies.
Based on a donor-acceptor framework, several conjugates have been designed and prepared in which an electron-donor moiety, ytterbium(III) porphyrinate (YbPor), was linked through an ethynyl bridge to ...Read More
The ionization energies of complexes between a rare-earth metal (Yb) and ammonia were measured for the first time. Using photoionization mass spectrometry under molecular-beam conditions, the adiabati...Read More
A 100 W-class all-fiber linearly-polarized single-mode fiber laser at 1120 nm with an optical efficiency of 50% was demonstrated. The laser consists of a 4.2 m long Yb-doped polarization maintaining f...Read More
We report generation of 48 fs pulses at a center wavelength of 2070 nm using a degenerate optical parametric oscillator (OPO) synchronously-pumped with a commercially available 36-MHz, femtosecond, mo...Read More
Preparation and characterization of ZnS:Tb,Gd and ZnS:Er,Yb,Gd nanoparticles for bimodal magnetic-fluorescent imaging.
As bimodal magnetic-fluorescent imaging agents, the preparation of ZnS:Tb,Gd and ZnS:Er,Yb,Gd nanoparticles via a facile homogeneous precipitation method is reported. The results show that these nanop...Read More
Report of the Task Group 186 on model-based dose calculation methods in brachytherapy beyond the TG-43 formalism: current status and recommendations for clinical implementation.
The charge of Task Group 186 (TG-186) is to provide guidance for early adopters of model-based dose calculation algorithms (MBDCAs) for brachytherapy (BT) dose calculations to ensure practice uniformi...Read More
We present direct real-time experimental measurements and numerical modeling of temporal and statistical properties for the Ytterbium-doped fiber laser with spectral bandwidth of ~2 GHz. The obtained ...Read More
A cryogenic slab laser that is suitable for scaling to high power, while taking full advantage of the improved thermo-optical and thermo-mechanical properties of Yb:YAG at cryogenic temperatures is de...Read More
Experimental evidence for the formation of divalent ytterbium in the photodarkening process of Yb-doped fiber lasers.
In this work we present experimental evidence that the valence instability of the ytterbium ion play a key role for the observed photodarkening mechanism in Yb-doped fiber lasers. Luminescence and exc...Read More