CANdotNanoparticles for your purpose

Overview of CANdot Series

fluorescent Quantum Dots in solution The nanoparticles within our CANdot® range were especially developed to fulfill the needs even of challenging applications. They exhibit a small size distribution and form a homogeneous dispersion in suitable solvents. All of our particles are stabilized with ligands on their surface to achieve a long time stability of these dispersions and to prevent agglomeration.

To increase the applicability of our CANdot® particles we take particular care about their reproducibility and the possibility of up-scaling. Therefore we have developed a patent pending continuous flow process for our semiconductor particle range (CANdot® Series A & C). All other particles are done in optimized batch reactions to ensure their usability, too.

Series A: Fluorescent Cd-based semiconductor nanoparticles covering the visible range from 500 to 625 nm. Soluble in nonpolar organic solvents like hexane, toluene or chloroform these particles have narrow size distributions and are therefore characterized by narrow fluorescence bands. They are available with particle diameters between 3 and 6 nm which corresponds to the emission wavelength. Due to their high quantum yields and photostability they can be used in solar cells, LEDs and as fluorescent labels for biomedical research.

Series C: Pb-based semiconductor nanoparticles for the use as IR emitters (1000 to 1600 nm) or absorbers. They are soluble in nonpolar organic solvents like hexane, toluene or chloroform and have narrow size distributions. They are available with particle diameters between 3 and 6 nm which corresponds to the emission wavelength. As the PbS particles absorb light in the UV/VIS and NIR range they are highly suitable as absorber material in solar cells.

Series D: Cu and Mn doped ZnO nanoparticles with antibacterial properties. These particles are available in spherical shape as well as rod shape with sizes between 5 and 100 nm. They form stable dispersions in chloroform and water/ethylene glycol mixtures. The antibacterial effect is caused by the dopant and was shown for bacillus subtilis. The particles can be used as dispersion or as a compound.

Series G: Au nanoparticles with different sizes and shapes. These particles are stabilized with citrate and available spherical and rod shape with sizes between 15 and 100 nm. They are homogeneously dispersible in aqueous media and can easily be functionalized via thiol adsorption on their surface. That’s why our Series G particles are highly suitable for biomedical research.

Series M: Spherical iron oxide nanoparticles with diameters between 5 and 25 nm. These particles are available as dispersion in hexane and exhibit different magnetic properties due to their size. After phase transfer into aqueous solution they can be used as contrast agents in biomedical research.

Series X: Rare-earth doped particles with various fluorescence colors (blue, yellow, green, red). These particles work as an alternative to our Series A semiconductor range. Here the fluorescence wavelength can be tuned by varying the dopant while the excitation has to be around 260 nm. The Series X particles form a complete colorless dispersion in polar media so they are an ideal additive to invisible fluorescent inks.

Dr. Jan Niehaus

Dr. Jan Niehaus

Dr. Christoph Gimmler

Dr. Christoph Gimmler