Resultado da Busca
14 de jun. de 2023 · By adjusting the type and percentage of rare earth ions doping, excitation and emission wavelength could be programmed in multiple channels, which contributed to multiplex imaging. (3) Current LDNPs used for activatable NIR-II imaging normally use TME expressed small molecules, such as ROS and GSH, to degrade NIR absorbing dye molecules for recovering LDNPs NIR-II emission.
Research in novel materials has been extremely active over the past few decades, wherein a major area of interest has been nanoparticles with special optical properties. These structures can overcome some of the intrinsic limitations of contrast agents routinely used in medical practice, while offering addit
1 de jun. de 2022 · Rare earth nanoparticles have a wide spectrum of monodisperse or well-defined crystalline sizes, as well as sophisticated crystallite morphologies, compositions, and crystal structures. When used in catalysis, optics, sensors, and biological applications, well-controlled nanoparticles usually display good stability and great performance.
6 de jan. de 2022 · Impurity doping is a promising method to impart new properties to various materials. Due to their unique optical, magnetic, and electrical properties, rare-earth ions have been extensively explored as active dopants in inorganic crystal lattices since the 18th century. Rare-earth doping can alter the crystallographic phase, morphology, and size, leading to tunable optical responses of doped ...
1 Introduction . Trivalent rare earths (REs) doped into a host material are attractive for multiple photonics and optoelectronics applications since they can present sharp absorption and emission lines, high quantum efficiency and no photobleaching. 1–4 Recently, since the development of rare-earth doped nanoparticles, they are intensively investigated for bio-imaging, 5,6 photodynamic ...
Rare-earth oxides are potentially promising materials because of their paramagnetism and high magnetic susceptibility in the bulk, but the magnetic properties of their nanoparticles remain incompletely characterized. Here, we present full M–H loops for commercial RE2O3 nanoparticles (RE 1⁄4 Er, Gd, Dy, Ho) with radii from 10–25nm at room ...
Under an 808 nm excitation, the internal rare earth-doped nanoparticles (RENPs) can emit NIR-II luminescence for imaging. In addition, the generated upconversion luminescence in the visible region can be used as an excitation light source to excite the photosensitizers on the surface of the RENPs to generate singlet oxygen for antitumor photodynamic therapy.
