SKU: 63855649767

'-NH2 modified upconverting(yellow-green)

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Description

'-NH2 modified upconverting(yellow-green)Product Name Name: NH2 modified upconverting nanoparticlesyellow green 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. Currently,

Product Name

Name: -NH2 modified upconverting nanoparticles(yellow-green 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: 545/660 nm

Excitation wavelength: 975-980nm

Particle diameter: 35 nm

Main components: NaYREF4 (RE:Yb, Er) 

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: 63855649767

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adam
Cuba, US
★★★★★ 1
does not fit a 330ci
Color: Matte Black, Size: For 1999-2002 E46 Coupe Cabriolet Pre-LCI
doesn't fit
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Reviewed in the United States on April 19, 2023
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Josh
Phoenix, US
★★★★★ 1
HONEST REVIEW: Dont waste your money: 2001 330Ci (pre-LCI)
Color: Matte Black, Size: For 1999-2002 E46 Coupe Cabriolet Pre-LCI
I tried these because the reviewer's pictures look like these would work. I will assume the integrity of the reviewer and their word that the grills in the pictures are legitimately this brand grills. Which means something terrible happened to the manufactures molds from the time the reviewer got theirs to the time I received mine. I ordered the correct ones for my pre-facelift model and the quality looked promising however the top edge was inset about a 1/4 inch from the OEM one and they wiggled around to the point that there was NO CHANCE of them staying in on the way out of my garage. Don't waste your time and money. Just spend the extra $50 to get the ones from bimmerworld.
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Reviewed in the United States on September 19, 2024
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South Florida Wanderer
West Palm Beach, US
★★★★★ 5
Sunshade
Just installed the new top so far so good.
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Reviewed in the United States on July 24, 2025
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Whitney
Houston, US
★★★★★ 1
Needs to be Re-designed
I will update this rating depending on the outcome of my customer service/support experience. At this time, I cannot recommend this product. Although it’s marketed for ATV use, it does not withstand the realities that come with ATV riding. The snaps on the straps securing the front of the shade come undone with nearly every bump, making the shade unstable and frustrating to use. On our second trip out with it after about 3 hours of riding, the shade collapsed on me entirely. Initially, I thought the rear hooks had come loose, but to my surprise, the roof frame itself had snapped in half on both sides. I’m still unsure how this even happens. The metal completely snapped right where the roof poles bend in a U. Very odd. It forced us to remove the shade completely and carry it on the back of the quad for the rest of the ride since it was not functional anymore. Given this is only the second time we had even used it I would not recommend anyone purchase this product which is so unfortunate as living in AZ I had very high hopes for this product, as the concept is excellent, but it needs significant reinforcement to handle the rough terrain and constant movement involved in off-road riding and at this time I requesting a full refund and until this company revisits the design to make it sturdier and more reliable I will not consider purchasing again.
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Reviewed in the United States on December 1, 2025
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John
Boise, US
★★★★★ 4
It’s much more rigid than you might think.
The brackets did not fit the range of diameters that it said it would. Is pretty doofus when you lay it down backwards. It is however, more rigid than you might think. It works for me. I like it. Of course I can change things. I like the exterior fabric and I like the vinyl undercoating. I suspect it’s going to be waterproof as well. Now that I know, I’m not going to lay it down. I’m going to order a second one for my wifes quad, which is even narrower than the minimum they call out. 39.4”.
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Reviewed in the United States on October 2, 2024

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