SKU: 29467763295

-NH2 modified upconverting(yellow-green)

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Description

-NH2 modified upconverting(yellow-green)Product Name Name: NH2 modified upconverting nanoparticlesyellow green light 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

Product Name

Name: -NH2 modified upconverting nanoparticles(yellow-green light)

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: 29467763295

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VanillaPepper
Massapequa, US
★★★★★ 5
Awesome as a Computer Monitor—Crisp, Sleek, and Perfect for Daily Use!
Size: 24 inch 100Hz
I'm currently using the Philips 24-inch Frameless Full HD Monitor (1920 x 1080) as my primary computer display, and I must say, it has truly exceeded my expectations. The frameless design lends an elegant, modern aesthetic that seamlessly integrates into any workspace. It not only enhances the visual appeal of my setup but also creates the illusion of a larger screen, all while conserving valuable desk space. In terms of performance, the picture quality is exceptional. Text appears remarkably sharp, and colors are vibrant and lifelike, which greatly enhances my viewing experience. I’ve spent several hours in front of this monitor, whether working on projects, enjoying movies, or juggling multiple applications, and I’ve found that it minimizes eye strain—something I greatly appreciate during long days of use. Considering the price point, this monitor truly stands out in both quality and design. If you’re in the market for a reliable and stylish monitor that performs exceptionally well for everyday computer tasks, I wholeheartedly recommend this Philips model as a fantastic choice. Excellent response time.
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Reviewed in the United States on April 22, 2025
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tb626
Chelsea, US
★★★★★ 5
Excellent monitor!!! Be aware that it does not have internal speakers.
Size: 24 inch 100Hz
Beautiful image. This monitor is excellent and I am very happy with it. However, you should be aware that it does not have any internal speakers and it does not have any audio input. It does have audio output for external speakers or headphones. For me, this was not a problem since I use a USB external speaker for better clarity. The lack of internal speakers was a surprise to me, but I suppose since the lack of speakers mentioned in the product description should have tipped me off.
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Reviewed in the United States on April 29, 2026
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PittieMom
Phoenix, US
★★★★★ 5
Works as it should
Size: 24 inch 100Hz
I started a new job a few months ago and I get to work from home one day a week. They do not pay for you to set up a home office however, so I was looking for a cheap monitor for part of my set up. I came across this one and decided to try it out. I work in client service for a finance company so a lot of what I use it for is email, other conversational programs, and then our custodian software. I’m not doing anything crazy. I have it connected to a name brand laptop and it was very easy to set up with no issues. It turned right on. The picture quality is nice. Again, I’m not doing editing or anything on this so it works for what I need. It does NOT have speakers, so I do need to use the speakers on my laptop( which can be annoying), but again it’s not a deal breaker. I have been using it now for 5 months and it’s been working really well for my set up. I am thinking of getting a second monitor and I would get another of these but also I do want a speaker so I don’t know that I would get this exact version. For the price, if you are looking for something basic for normal work from home needs, this does the trick!
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Reviewed in the United States on February 17, 2026
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Rana
West Palm Beach, US
★★★★★ 4
pretty good
Size: 24 inch 100Hz
Philips' 24-inch Frameless Full HD Monitor has the same type of attraction that the sleek lines and frameless edge provide as the utility that the product provides in terms of work and entertainment. Frameless edge helps provide the fashionable and streamlined appearance, while the 23.8-inch display provides the Full HD (1920x1080) resolution that creates the crisp images that are ideal for daily usage. Establishment and Link: Installation of the monitor is usually simple and easy, and the process is not difficult to complete and comprehend by the user. It includes one HDMI and one VGA socket in order to support most equipment. It lacks internal speakers, yet external speakers or headphones must be utilized if one desires sound output from the monitor. Performance It has the feature of supporting up to 100Hz display refreshes for smoother graphics when doing regular computing tasks. While good enough for general applications, there were comments that said that accurate color calibration to function is problematic and that this is one area that needs investigating if you're doing high accuracy color precision tasks. These include: A. Design Aside from the frameless feature, the monitor also impresses by being light in weight and having a sturdy base. The stand itself is also adjustable so the user has the opportunity to tilt to the convenience. VESA mounting support is also included on the monitor for the convenience of the user who would want varied mounting options. Reddit Conclusion Philips 24-inch Frameless Full HD Monitor offers the perfect form and function blend at the unbeatable price. Easy installation, two ports for connection, and the slim profile make it perfect for those consumers who require a no-frills monitor for general computing use. Purchasers will have to balance the fact that there are no speakers built-in and potential differences in the accuracy of the color calibration to decide if the display is perfect for their specific requirements.
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Reviewed in the United States on March 23, 2025
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Cindi Sullivan
Chelsea, US
★★★★★ 5
Good quality product
Size: 24 inch 100Hz
Happy with this purchase, easy to set up, I mostly use for my camera system, but flip around from TV and streaming! Love the size.
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Reviewed in the United States on May 11, 2026

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