Results 71 to 80 of about 3,884 (187)

Photo‐responsive carbon dots for pyroptosis‐mediated anti‐tumor application

Responsive Materials, EarlyView.
Photo‐responsive CDs generate ROS to induce tumor cell pyroptosis, thereby stimulating antitumor immunity. Abstract Pyroptosis refers to a kind of lytic programmed cell death, characterized by the release of pro‐inflammatory cytokines during the process. Owing to its immune response stimulation ability, pyroptosis has garnered considerable attention in
Lingyun Li, Xue Wu, Zekun Yan, Jun Wu, Caishi Huang, Songnan Qu   +5 more
wiley   +1 more source

LUMINESCENCE DIAGNOSTICS OF TUMORS WITH UPCONVERSION NANOPARTICLES

Almanac of Clinical Medicine, 2016
Background: To improve quality of surgery in oncology, it is necessary to completely remove the tumor, including its metastases, to minimize injury to normal tissues and to reduce duration of an intervention. Modern methods of detection based on radiological computerized tomography and magnetic resonance imaging can identify a tumor after its volume ...
V. V. Rocheva, N. V. Sholina, S. P. Derevyashkin, A. N. Generalova, A. V. Nechaev, D. A. Khochenkov, V. A. Semchishen, E. V. Khaydukov, E. V. Stepanova, V. Ya. Panchenko   +9 more
openaire   +3 more sources

Controlled Synthesis of Monodisperse Hexagonal NaYF4:Yb/Er Nanocrystals with Ultrasmall Size and Enhanced Upconversion Luminescence

Molecules, 2017
The ability to synthesize upconversion nanocrystals (UCNCs) with tailored upconversion luminescence and controlled size is of great importance for biophotonic applications.
Hui Li, Lei Xu, Guanying Chen
doaj   +1 more source

Polyaniline-coated upconversion nanoparticles with upconverting luminescent and photothermal conversion properties for photothermal cancer therapy

International Journal of Nanomedicine, 2016
Yadong Xing, Luoyuan Li, Xicheng Ai, Limin Fu Department of Chemistry, Renmin University of China, Beijing, People’s Republic of China Abstract: In this study, we developed a nanosystem based on upconversion nanoparticles (UCNPs) coated with a ...
Xing YD, Li LY, Ai XC, Fu LM
doaj  

Functional Interface Engineering Enables Selective Multicolor Upconversion in NaErF4@NaYF4 Core–Shell Nanocrystals

Advanced Physics Research
Lanthanide‐doped upconversion nanoparticles (UCNPs) have attracted extensive interest in broad frontier fields such as nanophotonics and biomedicine.
Juan Ouyang, Ze Zhang, Minghua Shangguan, Haozhang Huang, Yuxuan Qiu, Songbin Liu, Junjun Tan, Xinyu Ye, Bo Zhou   +8 more
doaj   +1 more source

Recent Progress on Rare-Earth-Doped Upconversion Nanomaterials for Bioassay Applications

Biosensors
Rare-earth-doped upconversion nanoparticles (UCNPs) have been widely used in biological detection due to their unique anti-Stokes shift, stable chemical properties, tunable emission wavelengths, and low biotoxicity.
Jiling Xu, Hengyuan Cao, Chenwei Wu, Ting Wang, Liheng Sun, Biao Dong   +5 more
doaj   +1 more source

Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation

Nature Communications
Triplet-triplet annihilation photon upconversion seeks efficient conversion of low-energy photons to high-energy emission. However, the triplet-triplet annihilation photon upconversion system faces limitations in emission gamut because efficient triplet ...
Honghan Ji, Zhiwang Luo, Xuefeng Yang, Xue Jin, Tonghan Zhao, Pengfei Duan   +5 more
doaj   +1 more source

Beyond the visible: metal-ion-doped inorganic UV phosphors for advanced photonics

Light: Science & Applications
Inorganic ultraviolet (UV) luminescent materials doped with metal ions (including rare-earth and heavy main-group metal ions) exhibit distinctive electronic transitions, excellent photostability, and tunable emission characteristics, making them highly ...
Yi Zhang, Yanjie Liang, Feng Liu, Xiao-Jun Wang   +3 more
doaj   +1 more source

Upconversion Luminescence Transients

, 2006
Inhomogeneous active-ion distributions in laser materials lead to strong deviations of upconversion versus direct luminescence transients from the quadratic law of energy-transfer upconversion. Measured luminescence decay curves in $LaSc_{3}(BO_{3})_{4}:Nd^{3+}$ and $GdVO_{4}:Nd^{3+}$ confirm experimentally the predicted deviations.
openaire   +1 more source

Frequency-Domain Method for Characterization of Upconversion Luminescence Kinetics. [PDF]

J Phys Chem Lett, 2023
Labrador-Páez L, Kankare J, Hyppänen I, Soukka T, Andresen E, Resch-Genger U, Widengren J, Liu H.   +7 more
europepmc   +1 more source