I suggest our Qdot quantum dots, from Thermo Fisher Scientific. We have them with emission ranges from 525 up to 800, with size ranges between 13-21 nm hydrodynamic diameter (the farther red-shifted the product, the larger the diameter). They are very bright and photostable, and we have many different derivations for different uses or conjugations.
A 456 nm laser line will excite all of them very efficiently.
Please feel free to reach out to me if you wish for more information (I have a sizing chart I can send you, for instance). Here is our general landing page for information: www.thermofisher.com/qdot
Jason A. Kilgore
Technical Application Scientist
Molecular Probes / EVOS Tech Support
Life Sciences Solutions
Thermo Fisher Scientific
29851 Willow Creek Rd.
Eugene, OR 97402-9132
1-800-955-6288 then option 4, then option 6, then option 2.
Or dial direct at +1 541 335 0353
[hidden email] www.thermofisher.com
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From: Confocal Microscopy List [mailto:[hidden email]] On Behalf Of Niklas Lorén
Sent: Tuesday, May 02, 2017 9:42 AM
To: [hidden email] Subject: Small and bright quantum dots
I am looking for stable and bright quantum dots in the size range 3 to 20 nm. We have laser lines accessible in the range 456 nm to 635 nm. I would be happy for any advice about where to find such quantum dots (or other very bright particles) in that size range.