SKU: 82958224931

PEG-COOH modified upconverting (purple-blue light)

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Description

PEG-COOH modified upconverting (purple-blue light)Product Name Name: PEG COOH modified upconverting nanoparticles (purple blue 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-COOH modified upconverting nanoparticles (purple-blue 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: 365/475 nm

Excitation wavelength: 975-980nm

Particle diameter: 35 nm

Main components: NaYREF4 (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: 82958224931

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Christina Visser
Lexington, US
★★★★★ 5
My go to!
Style: Tropical Coconut
I freaking love this sunscreen, not only is the smell divine, but a little goes a long way. It doesn’t leave a greasy feeling or residue.
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Reviewed in the United States on December 15, 2025
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C. Herman
Pawtucket, US
★★★★★ 5
Great stuff.
Style: Tropical Coconut
No weird smell or greasy residue, feels great on the skin. Tried it while on vacation (friend's lotion), and bought some when I got home. It is my go to now.
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Reviewed in the United States on July 1, 2025
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The non-critic
Chelsea, US
★★★★★ 5
Great value, excellent product!!!!!
Scent: Mango & Hibiscus, Size: 12 Fl Oz (Pack of 1)
This is the best shampoo I’ve ever used. No joke. . I used to spend $42 per bottle of Pureology Hydrate Sheer for years. One day I forgot to bring shampoo when I travelled and considering I am allergic to most shampoos since I was a child, I went to Whole Foods Market and bought this, as I already use the excellent Babo 50 SPF sunscreen. . That was over 4 years ago and I’ve bought this on repeat. Just bought 2 more bottles because I fear they stop making this. . The package is a little quirky. So I put it in a reusable pretty bottle in my shower. . My hair is ash blonde, baby fine and highlighted, about shoulder length. This shampoo is safe for daily use, it is lightly scented with a very faint mango/flower scent that is barely there after you rinse it. . I’ve experience no build up. Before using this, when I was using Pureology, I had to use a clarifying shampoo once a week, otherwise my hair felt like greasy straws. . Since using this shampoo, I no longer have to do that. My hair is clean, soft, can’t understand the volume and shine after I use this. . My $200 per haircut hair stylist kept paying me compliments, thinking I’ve upped my hair routine with masks, heat protecting spray and all the nonsense. NOPE. I just wash with this shampoo. . Ps- sometimes I use Babo’s Baobab & Rosehip Conditioner in the light peachy pink container, sometimes I use another conditioner. Regardless, I’d pay twice as much for this shampoo. . Exceptional.!
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Reviewed in the United States on May 18, 2026
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Lady Godzilla
Lake Worth, US
★★★★★ 5
Color-treated hair that looks fabulous!
Scent: Mango & Hibiscus, Size: 12 Fl Oz (Pack of 1)
I received a small sample of this shampoo as part of a Whole Foods 12 Days of Beauty holiday promotion. Normally those boxes are loaded with third-rate products the store is trying to promote. Well, not this time. I was desperate to find a shampoo that would clean my color-treated but very, very fine hair without stripping the color or weighing it down with far too much moisture - bordering on greasy. This shampoo has really been a game changer for me (going grey or shaving my head were considerations). It gently cleans my hair (and scalp) with no down-side results, and smells divine. My hair looks healthy & fluffy (no greasiness!) all day long and even into the following day. Added bonus - genuine shine. I must add that I have pretty short hair so I honestly don’t need much to clean me up, although I do wash it daily. The amount in the carton is smaller than a lot of brands out there but, in my situation, I feel I am getting value for my money. My expensive dye-job looks awesome every single day - so you’ve gotta weigh your choices. It’s working well for me and it just might be a solution for you but you won’t know unless you try it.
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Reviewed in the United States on January 5, 2025
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Kelsey Floyd
Omaha, US
★★★★★ 5
Nourishing mango & hibiscus - LOVE!!
Scent: Mango & Hibiscus, Size: 12 Fl Oz (Pack of 1)
I was looking for a clean nontoxic alternative to my usually shampoo and conditioner. I’ve alternated around between the expensive salon-grade and Sephora products for the past 10 years. I thought I’d give Babo’s new shampoo and conditioner a try because I love the body wash. I love this stuff! It makes my hair so clean and soft. For reference, my hair type is straight and fine, but I have a lot of hair. I’m brunette and haven’t colored it in over a year. I noticed the shampoo doesn’t foam up as much as other shampoos I use, but my hair still comes out clean and I can usually go 5 days between shampooing again (I double shampoo my roots which helps). I also noticed the conditioner is a little more on the milkier/thinner side, which makes sense for the products to have more flow to them because they are in cartons meant to pour. I still use my usual leave-in conditioner spray and some hair oil after I wash and it all works great together. Overall I love the shampoo + conditioner, they smell great, they cost less than my usual products and they’re clean ingredients so it’s a win win. Worth a try!
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Reviewed in the United States on March 15, 2024

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