PEG-NH2 modified upconverting (Yellow green)
SKU: 50937511760

PEG-NH2 modified upconverting (Yellow green)

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Description

PEG-NH2 modified upconverting (Yellow green)Product Name Name: PEG 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,

Product Name

Name: PEG-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: 50937511760

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Hman
Birmingham, US
★★★★★ 5
Good alternative to zip ties
Size: 6inches-60PCS
These ties are an excellent alternative to traditional zip ties. They’re sturdy, well‑made, and far more economical in the long run. Unlike zip ties, which you have to cut and throw away, these can be untied and reused over and over without losing their grip. They keep cables and wires neatly organized, and the ability to reuse them makes them both practical and cost‑effective. Highly recommended for anyone looking for a smarter solution than disposable zip ties.
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Rudy's House
Fort Morgan, US
★★★★★ 4
Good enough!
Size: 8inches-60PCS
Good enough, inexpensive, works fine.
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Reviewed in the United States on March 26, 2026
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Cindy F
Omaha, US
★★★★★ 5
Defiantly worth having
Size: 6inches-60PCS
The Nettbe reusable cable ties are wonderful. So tired of having to dig thru the cords in my drawer. This product makes so easy to keep cords neat, secure, organized and easy to find. The product is very easy to use and don't have to worry about the ties becoming a mess themselves because they stick together. The cable ties are not thick, seem very durable with them being made out of quality material and won't have to worry about them getting dirty.
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Mandi Mills
Lake Worth, US
★★★★★ 5
Super handy for organizing cords
Size: 6inches-60PCS
I’ve been using these cable ties for my home office, and they make managing cords so much easier. They’re adjustable, reusable, and hold cables securely without slipping. I like that they come in a big pack, so I can organize all my chargers, headphones, and computer cords without running out. The hook-and-loop design is flexible but strong, and it keeps everything neat and tangle-free. Definitely a small item that makes a big difference.
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Michael
Pawtucket, US
★★★★★ 5
Work great
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Strong velcro that'll hold a good bundle of cables. Great for cable management or really anything.
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Reviewed in the United States on May 25, 2026

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