Results 11 to 20 of about 3,807 (195)

Gold nanorods conjugated upconversion nanoparticles nanocomposites for simultaneous bioimaging, local temperature sensing and photothermal therapy of OML-1 oral cancer cells

International Journal of Smart and Nano Materials, 2021
The major challenge in photothermal therapy (PTT) is to develop nanocomposites that simultaneously exhibit bioimaging and PTT under a single near-infrared (NIR) irradiation with high therapeutic efficiency.
Duc Tu Vu, Thanh Thu Vu-Le, Van Nghia Nguyen, Quoc Minh Le, Churng-Ren Chris Wang, Lai-Kwan Chau, Tzyy-Schiuan Yang, Michael W. Y. Chan, Cheng-I Lee, Chu-Chi Ting, Jiunn-Yuan Lin, Hung-Chih Kan, Chia Chen Hsu   +12 more
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Facets of optically and magnetically induced heating in ferromagnetically doped-NaYF4 particles

Journal of Physics Communications, 2023
Upconverting particles like Yb and Er-doped NaYF _4 are known to heat up after illumination with light at pump wavelength due to inefficient upconversion processes.
Snigdhadev Chakraborty, Gokul Nalupurackal, M Gunaseelan, Srestha Roy, Muruga Lokesh, Jayesh Goswami, Priyankan Datta, Pallab Sinha Mahapatra, Basudev Roy   +8 more
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Engineering Red-Enhanced and Biocompatible Upconversion Nanoparticles

Nanomaterials, 2021
The exceptional optical properties of lanthanide-doped upconversion nanoparticles (UCNPs) make them among the best fluorescent markers for many promising bioapplications.
Masfer Alkahtani, Najla Alsofyani, Anfal Alfahd, Anas A. Almuqhim, Fahad A. Almughem, Abdullah A. Alshehri, Hussam Qasem, Philip R. Hemmer   +7 more
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Temoporfin-Conjugated Upconversion Nanoparticles for NIR-Induced Photodynamic Therapy: Studies with Pancreatic Adenocarcinoma Cells In Vitro and In Vivo

Pharmaceutics, 2023
Upconverting nanoparticles are interesting materials that have the potential for use in many applications ranging from solar energy harvesting to biosensing, light-triggered drug delivery, and photodynamic therapy (PDT).
Oleksandr Shapoval, David Větvička, Vitalii Patsula, Hana Engstová, Olga Kočková, Magdalena Konefał, Martina Kabešová, Daniel Horák   +7 more
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An aptasensor for ampicillin detection in milk by fluorescence resonance energy transfer between upconversion nanoparticles and Au nanoparticles

Food Chemistry: X, 2022
This paper reports a portable fluorescence resonance energy transfer (FRET) aptasensor for ampicillin (Amp) detection using upconversion particles (UCNPs) as energy donors and Au nanoparticles (AuNPs) as energy acceptors.
Chong Chen, Hong Lei, Nan Liu, Hui Yan
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Spectroscopic characterization of rare events in colloidal particle stochastic thermodynamics

Frontiers in Chemistry, 2022
Given the remarkable developments in synthetic control over chemical and physical properties of colloidal particles, it is interesting to see how stochastic thermodynamics studies may be performed with new, surrogate, or hybrid model systems.
Sandro K. Otani, Thalyta T. Martins, Sérgio R. Muniz, Paulo C. de Sousa Filho, Fernando A. Sigoli, René A. Nome   +5 more
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Light Conversion upon Photoexcitation of NaBiF₄:Yb³⁺/Ho³⁺/Ce³⁺ Nanocrystalline Particles

Nanomaterials, 2023
NaBiF4 nanocrystalline particles were synthesized by means of a facile precipitation synthesis route to explore upconversion emission properties when doped with lanthanide ions. In particular, the incorporation of the Yb3+-Ho3+-Ce3+ triad with controlled
Enrico Trave, Michele Back, Davide Pollon, Emmanuele Ambrosi, Leonardo Puppulin   +4 more
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Photostable and Small YVO₄:Yb,Er Upconversion Nanoparticles in Water

Nanomaterials, 2021
In this work, we report a simple method of silica coating of upconversion nanoparticles (UCNPs) to obtain well-crystalline particles that remain small and not agglomerated after high-temperature post-annealing, and produce bright visible emission when ...
Masfer Alkahtani, Anfal Alfahd, Najla Alsofyani, Anas A. Almuqhim, Hussam Qassem, Abdullah A. Alshehri, Fahad A. Almughem, Philip Hemmer   +7 more
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Upconversion particle-assisted NIR polymerization enables microdomain gradient photopolymerization at inter-particulate length scale

Nature Communications, 2023
High crosslinking and low shrinkage stress are difficult to reconcile in the preparation of performance-enhancing photopolymer materials. Here we report the unique mechanism of upconversion particles-assisted NIR polymerization (UCAP) in reducing ...
Peng Hu, Hang Xu, Yue Pan, Xinxin Sang, Ren Liu   +4 more
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Efficient Near-Infrared-Activated Photocatalytic Hydrogen Evolution from Ammonia Borane with Core-Shell Upconversion-Semiconductor Hybrid Nanostructures

Nanomaterials, 2021
In this work, the photocatalytic hydrogen evolution from ammonia borane under near-infrared laser irradiation at ambient temperature was demonstrated by using the novel core-shell upconversion-semiconductor hybrid nanostructures (NaGdF4:Yb3+/Er3+@NaGdF4 ...
Andrew J. Evangelista, Mariia Ivanchenko, Hao Jing   +2 more
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