About Qdot 655

Qdot® 655 from Thermo Fisher Scientific is an inorganic nanocrystal with a surface functionalized to allow antibodies and biomolecules to be cross-linked. It is most efficiently excited between 320-405 nm but is capable of excitation across every laser less than its emission peak. It is significantly brighter and more photostable than traditional organic fluorophores, making it still useful for fluorescence microscopy, however its size and solubility issues make it a challenge to use in flow cytometry. In spectral flow cytometry it may still prove useful due to its very unique spectral characteristics