SKU: 17745357711

Polyethyleneimine (PEI) modified Au Nanoparticles

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Description

Polyethyleneimine (PEI) modified Au NanoparticlesProduct Name Polyethyleneimine (PEI) modified Au nanomaterials Product Overview PEI modified gold nanoparticles are modified with PEI on top of PEG modified gold nanoparticles, and this operation makes the nanoparticles positively charged. Technical Parameter Concentration: 0. 05mg ml Solvent: water Remarks: Concentration is obtained according to the feeding ratio, actual consumption will be lower than 0. 05mg ml. Product Features Efficient gene

Product Name

Polyethyleneimine (PEI) modified  Au nanomaterials

Product Overview

PEI-modified gold nanoparticles are modified with PEI on top of PEG-modified gold nanoparticles, and this operation makes the nanoparticles positively charged.

Technical Parameter 

Concentration: 0.05mg/ml

Solvent: water

Remarks: Concentration is obtained according to the feeding ratio, actual consumption will be lower than 0.05mg/ml.

Product Features

 

Efficient gene delivery: PEI-modified gold nanoparticles can be used as efficient gene carriers, forming complexes with DNA through electrostatic adsorption to enhance the efficiency of gene delivery. 

Excellent biocompatibility: PEI is a cationic polymer that interacts with cell membranes and promotes the binding of nanoparticles to cells, enhancing their stability and biocompatibility in organisms. 

Enhanced Optical Properties: Gold nanoparticles inherently have a unique surface plasmon resonance (SPR) effect, and PEI modification can further modulate their optical properties, such as absorption and scattering characteristics, giving them potential applications in optical imaging and sensing.

Multimodal imaging capability: PEI-modified gold nanoparticles can be used in a variety of imaging techniques, such as magnetic resonance imaging (MRI), photoacoustic imaging and CT imaging, providing multimodal imaging capability.

Application Fields

 

Gene and siRNA delivery: PEI-modified gold nanoparticles can be used as gene and siRNA delivery carriers. It has been shown that PEI-modified gold nanoparticles can bind siRNA via covalent bonding, form complexes, and induce degradation of target mRNAs via the RNA interference (RNAi) mechanism. This approach shows high efficiency and low cytotoxicity in gene silencing.

Photothermal therapy: PEI-modified gold nanoparticles have shown excellent performance in photothermal therapy. The plasmon resonance effect on the surface of gold nanoparticles allows them to efficiently convert light energy into heat under near-infrared light irradiation, generating localised high temperatures that can kill tumour cells.PEI modification further enhances the stability and biocompatibility of the nanoparticles. 

Targeted drug delivery: PEI-modified gold nanoparticles can be surface-modified with targeted ligands (e.g., folic acid, aptamers, hyaluronic acid, glutathione, peptides, and antibodies) for targeted drug delivery. This targeting significantly increases drug concentration in cancer cells and reduces toxicity to normal cells. 

Radiosensitisation: PEI-modified gold nanoparticles can be used as radiosensitisers in radiotherapy. Gold nanoparticles can enhance the radiation effect of X-rays and increase the sensitivity of tumour cells to radiation, thus enhancing the effect of radiotherapy.

Related Information

 

Storage: Sealed, refrigerated at 4¡ãCand protected from light.

Expiry date: 6 months

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 17745357711

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4.7 ★★★★★
Based on 9 reviews
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Product Reviews
S
Verified Purchase
Sandi Main
Natrona Heights, US
★★★★★ 5
Great whisk, but stop changing the whisk design or sell extras
Color: Silver
Overall, I really like this frother. It’s my third one from the same brand. (They last about a year but kind of expected for $15.) I like that it comes with multiple whisks, that it can travel, and that the whisks are removable and can be thrown in the dishwasher. As others have pointed out, the batteries it comes with are pretty useless. I didn’t get even one proper whisk out of them. I also wish they wouldn’t change the whisk design every time I purchase. I like having extra whisks and just have to throw the old ones out. I wish these companies would sell extra whisks. Update: after using this for a couple weeks, I really don’t like the design of he new whisk attachments. They’re hard to pull off without sending the tip flying.
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Reviewed in the United States on January 23, 2026
C
Verified Purchase
C
Lexington, US
★★★★★ 5
Delightful little device now that I've had a practice run with it
Color: Silver
I just picked this up to make my own cappuccino and breve and I must say that I've fallen in love with the thing. My first use was a bit of a misfire owing to my inexperience with it, but the second time worked like a champ. The trick is to ensure that you have plenty of empty head space in the container to develop a good vortex and foam volume while still having a tall enough fluid column to keep the mixing head mostly submerged while generating the vortex. My first attempt involved using about half a cup of half and half in a small saucepan. I had more than enough head space, but I was only barely able to keep the mixing head (it comes with two: a single turn coil and a 3-turn coil of coil) submerged and that went poorly, leaving me with a bit of a mess to clean up on my rangetop as the lack of fluid column ended up slinging the fluid around and out of the saucepan. The second attempt went far better, as I transferred the barely-simmered half and half back into the Pyrex two-cup mixing cup in which i initially measured the 4 fl. oz. This time it worked beautifully. There was just enough unfoamed column height to keep the mixing head well covered prior to powering up and it just barely kept me sufficiently covered while powered up to maintain a very vigorous yet controlled vortex. This method also had the advantage of telling me exactly how much total foamed volume I had generated. The resulting breve had a wonderfully thick and frothy head in my mug and resulted in a delightfully topped beverage which, if anything, had a bit too much foam and a bit too little liquid. That's on me, however, since I wanted to get a feel for the device under better conditions to build my own experience; I'll just run the frother for less time next time. Cleanup of the device itself is quite easy: simply detach the mixing head and shaft from the motor base and rinse. I always hand-wash my dishes, so I'm not in a good position to speak to its machine wash compatibility, but I suspect that it would come out just fine, provided that care is taken not to bend the shaft or coil head out of shape. The device itself is small enough to fit in a purse and should travel quite nicely, though you'll need to commit to a single mixing head, which will almost certainly turn out to be the smaller one. It's really nice to be able to make cappuccino/breve at home any time I see fit now. It's going to make a well-loved addition to my kitchen.
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Reviewed in the United States on December 6, 2018
C
Verified Purchase
C. Day
Omaha, US
★★★★★ 4
Worked well, fast, then overheated. Contacted Vomelon and they were quick to help me replace unit.
Color: Silver
Update ***Vomelon customer service is great! I contacted them about my issue, they responded quickly and worked to resolve it. They're giving me a new one! Hope this one works out. I'm adding back a star for their service. Update 4/18/20 While making whipped Dalgona coffee today the unit slowed down the completely shut off. I pressed the power button again to restart and same thing, it starts at high speed then slows down and shuts off. I will be contacting seller. I’m taking away a star, can’t believe this is happening. First day using this frother with the batteries provided and the body became very hot. Used it for about 3 minutes and the heat became uncomfortable in my hands. Took out the AAA alkaline batteries “Nai Li Wang” brand made in China and replaced them with some Kirkland AAA that I had on hand. Problem solved! No overheating with the new batteries. Throwing away the China made batteries. Would’ve been 5 stars if it weren’t for the overheating. Other than that mishap, the frother was easy to use and pretty powerful. Whipped up my coffee with maple syrup (making Dalgona coffee) really quick. I like that it has a cover for storage. I don’t have much space so having a compact size with a cover is convenient, I can put it in a drawer or storage box without damage to the whisk. Update: Day 2 of use Body of unit became warm but not hot as with original batteries provided. I used new batteries. Had the unit on for 4-5 minutes to whip my dalgona coffee. Not sure if the unit is supposed to get warm? Is it normal? I will contact seller. Besides that, my coffee got whipped pretty quick. I want to upload a photo but seems that Amazon has taken away that function for me? I could upload photos for my previous reviews on other products.
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Reviewed in the United States on April 16, 2020
G
Verified Purchase
Guy E. Wolek
Dallas, US
★★★★★ 5
Great Little Frother.
Color: Silver, Color: Silver
I really like this this little frother. What I noticed first is that it comes with a cover for the frothing arm. That’s very practical if you travel with it. I have traveled with a frother before and I put it in a toothpaste box, not much protection there. I use this 2 to 4 times a day. I can come pretty close to creating a Starbucks flat white at home. That saves $$$. The next thing I really like is that I can remove the arm for cleaning. If the arm does not come off clean up is a bit tricky. How does it work? Great! It has one speed, Fast. The power button is on the base of the handle so I just had to adjust the way I hold the frother when I turn it on. One thing, make sure the froth head is all the way into the liquid when you start it, lol. This little machine whips up a thick froth fast. It comes with 2 frothing heads, a three spring version as well as a standard one spring. There is a lot of plastic, but it doesn’t look or feel cheap. Actually I think it helps keep the weight down. I travel some and I appreciate when things are light. Over all, this is really nice it’s light portable and works great. I highly recommend this product. I was given this product for review and I am so glad they choose to contact me. I have been frothing milk for my coffee for the last few years. This has now became my go to frother.
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Reviewed in the United States on July 12, 2019
J
Verified Purchase
JSS
Chelsea, US
★★★★★ 5
Great Frother
Color: Silver
The best frother I’ve owned! Love that the whisk is removable for washing, the end is flat so it stands up on its own and it’s pretty powerful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026

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