-COOH modified upconverting (near-infrared )
SKU: 31245252290

-COOH modified upconverting (near-infrared )

Sale price$437.58 Regular price$486.20
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

-COOH modified upconverting (near-infrared )Product Name Name: COOH modified upconverting nanoparticles (near infrared 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: -COOH modified upconverting nanoparticles (near-infrared 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: 804nm

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]

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31245252290

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 1561 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
W
Verified Purchase
Winta
Lexington, US
★★★★★ 5
Love
Style: Kids SPF 50, Size: 3 Fl Oz (Pack of 1)
It’s nice I love it both me and my daughter we use it it don’t make you white it don’t stick it’s not greasy I love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
C
Verified Purchase
CoreyTheFro
Natrona Heights, US
★★★★★ 5
In most of all circumstances, this works
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
For Summer time and when playing and working in the sun, this is my go to sunscreen! I love how it is more natural than all the other ones out there. I have been sort of a spray on sunscreen connoisseur and this is the one that is my favorite. Also, if I have gotten a burn and put this on it, I believe it helps start the healing process on the burn I got. This is at least what I experienced multiple times last year. The only circumstance that this sunscreen fails miserably is in the Caribbean. I recently went on a cruise to that region and applied this sunscreen and it became evident that this and the other brands of spray on sunscreen do not work in Caribbean sun. The only sunscreen that works is the lotion based stuff that you rub into your skin. I have also consulted with friends on spray on sunscreen in the Caribbean and they all fail as well. So, this is why I say that it works in almost every circumstance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2023
C
Verified Purchase
Curl up with a book
Massapequa, US
★★★★★ 1
spray nozzle needs work.
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
I purchased 3 of these cans. Only one of them worked and that one was ok. Sprayed well, smelled good and and protected my skin and even though it was hard to press it to work, we WERE able to use it, but the other three .............? They would not rotate to the unlock position, therefore they would not spray. My husband and I tried everything to get it to rotate. It seems both the top and bottom ring spin around effectively doing nothing. So to pay almost $40 for only one can to work is definitley not worth the money. Buy somewhere else.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2024
A
Verified Purchase
Amanda Lockwood
Birmingham, US
★★★★★ 5
Great product! Highly recommend! Worth the money
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
Our family absolutely loves Alba sunscreen! It’s light, not super greasy, and smells really good. Everytime I see it on sale, I buy more of it! My husband is a red head, and he has to wear sunscreen all the time, and he prefers Alba brand over any others. Great Product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2025
M
Verified Purchase
Michael Marks
San Leandro, US
★★★★★ 4
Like the sunscree - not the spray can
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
Sunscreen itself did a great job with our snorkeling and scuba diving. Long lasting and didn't rub off in spots where masks and other things can leave spots unprotected. However, the spray can itself was difficult. Even when being sure it was completely in the unlocked position, it would take me two thumbs at full pressure to get it started spraying at times. Definitely, only a couple of us in the party were the appliers as we could get it started.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2023

recommand products