SKU: 3174453762

SiO2 coated upconverting nanoparticles(Purpleblue)

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Description

SiO2 coated upconverting nanoparticles(Purpleblue)Product Name Name: SiO2 coated upconverting nanoparticlesPurple and blue light? span> Product Overview Upconversion nanoparticles (UCNPs) are nanomaterials that can convert low energy light into high energy light. They are composed of inorganic nanocrystals doped with rare earth ions and have unique upconversion luminescence properties. Rare earth upconversion luminescence is based on the 4f electron transition of lanthanide rare earth ions.

Product Name

Name: SiO2 coated upconverting nanoparticles(Purple and blue lightï¼?/span>

Product Overview

Upconversion nanoparticles (UCNPs) are nanomaterials that can convert low-energy light into high-energy light. They are composed of inorganic nanocrystals doped with rare earth ions and have unique upconversion luminescence properties. Rare earth upconversion luminescence is based on the 4f electron transition of lanthanide rare earth ions. Currently, the common upconversion luminescence mechanisms can be summarized into three types: excited state absorption, energy transfer upconversion, and photon avalanche.

The preparation methods of upconversion nanoparticles mainly include coprecipitation method, high-temperature pyrolysis method, hydrothermal method, solvothermal method, sol gel method, etc. In order to widely apply UCNPs in the biomedical field, in addition to improving luminescence efficiency, it is also necessary to functionalize their surfaces to enhance water solubility and biocompatibility, and achieve multifunctionality. The main surface modification methods include ligand exchange (PEG, PEI, etc. with - COOH, - NH2 groups), ligand oxidation, ligand adsorption, layer by layer self-assembly, and silica coating.

Most of the rare earth doped ions in the nuclear nanoparticles are exposed on the crystal surface, which is prone to non radiative energy transfer with the external environment, leading to fluorescence quenching and thus reducing the upconversion luminescence efficiency. The most commonly used method to reduce this quenching process is to wrap an inert shell layer on the surface of doped nanocrystals to form a core-shell structure, which confines the luminescent ions in the internal core. The shell layer increases the distance between the luminescent center ion and the external environment, effectively reducing energy transfer and thus increasing the luminescence efficiency. At present, the most commonly used method is to modify the shell layer in the previously synthesized nuclear layer structure that is the same as the matrix material, such as NaYF: Yb, Er@NaYF4 NaYF4: Yb, Tm@NaYF4.

Technical Parameter

Emission wavelength: 365/475nm

Excitation wavelength: 975-980nm

Particle diameter:50+/-10nm  Subject to actual measurement

Main componentsNaYREF4 (RE:Yb, Tm) 

Product Features

Colorful luminescence: By changing the type and concentration of rare earth ions doped, multi-color luminescence from visible light to near-infrared light can be achieved.

Stokes shift is large: Stokes shift refers to the difference between the emission wavelength and the excitation wavelength. The Stokes shift of upconversion nanoparticles is relatively large, which can effectively reduce self absorption and background interference, improve luminescence efficiency and detection sensitivity.

Good photostability: Upconversion nanoparticles have good photostability and can maintain stable luminescence performance under long-term illumination.

Good biocompatibility: Through surface modification, upconversion nanoparticles can be coupled with biomolecules (such as proteins, antibodies, etc.) to achieve biological labeling and detection.

Non damaging to biological tissues: Its excitation light source near-infrared light (980nm or 808nm) has strong light penetration, almost no damage to biological tissues, and no background fluorescence.


Application Fields

Biomedical: Upconversion nanoparticles can serve as biomarkers for cell imaging, biological detection, drug delivery, and other applications. For example, coupling upconversion nanoparticles with antibodies or biomolecules can achieve targeted labeling and detection of specific cells or biomolecules.

Optical imaging: Upconversion nanoparticles can be used for deep tissue imaging, such as in vivo animal imaging. Due to its longer emission wavelength, it can penetrate deeper biological tissues, reduce tissue scattering and self fluorescence interference, and improve imaging clarity and contrast.

Photocatalysis: Upconversion nanoparticles can convert visible light into ultraviolet or near-infrared light, thereby broadening the spectral response range of photocatalytic materials and improving photocatalytic efficiency.

Solar cells: Upconversion nanoparticles can be used to improve the efficiency of solar cells. By combining upconversion nanoparticles with solar cell materials, low-energy photons can be converted into high-energy photons, increasing the absorption and utilization of solar light by the cell.

Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 3174453762

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John Mace
Charlottesville, US
★★★★★ 5
Keeps me organized, and cords hidden
I recently purchased the Oxford Cable Management Boxes, 3 Pack (Small, Medium, Large) with 15 Cable Ties, and I’m thrilled with how they’ve transformed my home office setup. This set is a fantastic solution for anyone looking to tame messy cords and create a clean, organized space. The three different sizes (small: 4.5"W x 9.3"L x 4.7"H, medium: 5.3"W x 12.6"L x 5.1"H, large: 6.2"W x 15.9"L x 5.4"H) are perfect for handling a variety of devices, from small phone chargers to large power strips. I used the large box to neatly conceal my surge protector and its tangle of cords, while the medium and small boxes worked wonders for my desk’s USB hubs and laptop charger. The boxes are made of sturdy, heat- and impact-resistant ABS plastic, which feels durable and gives me confidence they’ll last. What I love most is the thoughtful design. Each box has a pressure-fitted lid that’s easy to open and close, plus two cutouts for routing cables. The included cable ties—6 hook-and-loop, 6 silicone, and 3 twist ties—are a great bonus. The colorful hook-and-loop ties (blue, red, green, yellow, black, white) add a fun touch, while the silicone and twist ties are super practical for securing cords of different thicknesses. These ties made it easy to bundle everything neatly before tucking it into the boxes. The white finish blends seamlessly with my decor, giving my workspace a sleek, professional look. The boxes also have small circle feet on the bottom, which prevent slipping and add a nice touch of stability. I’ve noticed a huge reduction in visual clutter, and it’s reassuring to know my cables are safely contained, reducing tripping hazards and keeping my curious cat away from the wires. Installation was a breeze—less than 15 minutes to organize everything. The boxes are versatile enough for various settings, whether it’s a desk, entertainment center, or gaming setup. My only wish is that they included a few more cable ties, but the 15 provided were sufficient for my needs. Overall, the Oxford Cable Management Boxes have exceeded my expectations. They’re practical, stylish, and effective at keeping cords under control. If you’re tired of cable chaos, this set is a must-have! Highly recommend.
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Reviewed in the United States on August 23, 2025
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Michael Bauer
San Leandro, US
★★★★★ 5
Makes everything look so much clean
got these mostly to deal with all the random cords around the house, and they made a bigger difference than I expected. They’re simple, but they actually do what they’re supposed to. Once everything is tucked inside, it instantly makes the area look way more organized and less cluttered. I’ve been using them for things like power strips and extra cords, and they hide everything really well. They’re lightweight but still feel sturdy enough, and the lids stay on without being annoying to open. Pros: Really helps clean up the look of messy cords Easy to use, no setup needed Simple design that blends in Cons: Not huge, so larger power strips can be a tight fit Plastic isn’t super thick Overall I’d definitely recommend these if you’re trying to make a space look cleaner without doing anything complicated.
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Reviewed in the United States on March 19, 2026
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Genesis Block
Pawtucket, US
★★★★★ 5
Great Space Saver!
I purchased these for our family room charging hub and honestly wish I had known about them sooner. They are sturdy and very kid proof (at least for my kids). I love the push and lift design so little hands can’t just lift it open and they hold a lot yet blend in.
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Reviewed in the United States on April 8, 2026
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Desktop Shopper
Fort Morgan, US
★★★★★ 4
Handy boxes hides wire clutter.
Does what it is meant for. A bit hard to open once the top is fitted.
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Reviewed in the United States on May 25, 2026
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Verified Purchase
AmazingDog
Chelsea, US
★★★★★ 5
Clean, secure cable management
These are good cable boxes that close securely. They hide cables very well and look clean and blend into the home well.
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Reviewed in the United States on February 5, 2026

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