Results 41 to 50 of about 1,047,326 (236)

ENGINEERING THE NaYF4:Yb3+/Tm3+ UPCONVERSION NANOPARTICLE LUMINESCENCE ENERGY TRANSFER FOR A RATIOMETRIC pH INDICATOR

Tạp chí Khoa học Đại học Đà Lạt, 2022
Fluorescent dye 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) is used to develop a ratiometric pH indicator based on NaYF4:Yb3+/Tm3+ upconversion nanoparticles (UCNPs).
Nhat Nam Nguyen
doaj   +1 more source

Dual-Modal FexCuySe and Upconversion Nanoparticle Assemblies for Intracellular MicroRNA-21 Detection.

ACS Applied Materials and Interfaces, 2020
In situ quantification and imaging of low-level intracellular microRNAs (miRs) are important areas in biosensor research. Herein, DNA-driven FexCuySe@upconversion nanoparticle (UCNP) core@satellite nanostructures were developed to probe microRNA-21 (miR ...
Xiaoqian Jiang, Changlong Hao, Hongyu Zhang, Xiaoling Wu, Liguang Xu, Maozhong Sun, Chuanlai Xu, Hua Kuang   +7 more
semanticscholar   +1 more source

Upconversion nanocomposite for programming combination cancer therapy by precise control of microscopic temperature

Nature Communications, 2018
The combination of chemo and photothermal therapy is widely used to treat cancer but control of chemo and thermal effects is needed for optimized treatment.
Xingjun Zhu, Jiachang Li, Xiaochen Qiu, Yi Liu, Wei Feng, Fuyou Li   +5 more
doaj   +1 more source

Endowing inorganic nanomaterials with circularly polarized luminescence

Aggregate, 2022
Recently, materials with circularly polarized luminescence (CPL) properties have attracted substantial attention because they offer new perspectives in fundamental research and wide applications in photonics, bio‐encoding, catalysis, and so forth.
Dongxue Han, Chengxi Li, Chengyu Jiang, Xue Jin, Xiongbin Wang, Rui Chen, Jiaji Cheng, Pengfei Duan   +7 more
doaj   +1 more source

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

Frontiers in Chemistry, 2021
Among several optical non-contact thermometry methods, luminescence thermometry is the most versatile approach. Lanthanide-based luminescence nanothermometers may exploit not only downshifting, but also upconversion (UC) mechanisms.
Karmel de Oliveira Lima, Luiz Fernando dos Santos, Rodrigo Galvão, Antonio Claudio Tedesco, Leonardo de Souza Menezes, Rogéria Rocha Gonçalves   +5 more
doaj   +1 more source

Upconversion nanoparticles for bioimaging

Nanotechnology Reviews, 2017
AbstractFluorescent labeling is a widely used indispensable tool in biology. Conventional downconversion fluorescence labels with ultraviolet or short-wavelength excitation suffer from autofluorescence, low signal-to-noise ratio, and incident photo damage to living organisms.
Song Chenxi, Zhang Shubiao, Zhou Quan, Hai Hua, Zhao Defeng, Hui Yunze   +5 more
openaire   +2 more sources

Recent Advances on Functionalized Upconversion Nanoparticles for Detection of Small Molecules and Ions in Biosystems

Advanced Science, 2018
Significant progress on upconversion‐nanoparticle (UCNP)‐based probes is witnessed in recent years. Compared with traditional fluorescent probes (e.g., organic dyes, metal complexes, or inorganic quantum dots), UCNPs have many advantages such as non ...
Bin Gu, Qichun Zhang
doaj   +1 more source

NIR Photoregulated Theranostic System Based on Hexagonal-Phase Upconverting Nanoparticles for Tumor-Targeted Photodynamic Therapy and Fluorescence Imaging

Nanomaterials, 2020
Although photodynamic therapy (PDT) is an effective, minimally invasive therapeutic modality with advantages in highly localized and specific tumor treatments, large and deep-seated cancers within the body cannot be successfully treated due to low ...
Linlin Zhao, Jongseon Choi, Yan Lu, So Yeon Kim   +3 more
doaj   +1 more source

Cubic upconversion nanoparticles used as the theranostic system for the treatment and diagnosis of angiogenesis-related diseases

Materials Today Advances, 2022
Biocompatible nanostructures offer new pathways to overcome the obstacles in conventional anti-angiogenic therapy such as drug accumulation and therapeutic efficiency.
W.H. Tse, S. Yang, J. Zhang
doaj   +1 more source

The Intersection of CMOS Microsystems and Upconversion Nanoparticles for Luminescence Bioimaging and Bioassays

Sensors, 2014
Organic fluorophores and quantum dots are ubiquitous as contrast agents for bio-imaging and as labels in bioassays to enable the detection of biological targets and processes.
Liping Wei, Samer Doughan, Yi Han, Matthew V. DaCosta, Ulrich J. Krull, Derek Ho   +5 more
doaj   +1 more source