Quantum Dots (QD) ROTI ® nanoMETIC Quantum dots (QD) are fluorescent nanoparticles of certain semiconducting materials, whose electronic properties closely depend on the size of the particles. The fluorescence wavelength shifts towards red for larger particles, and to blue for the smaller ones. This allows coverage of the complete visible colour spectrum with quantum dots of different sizes and yet the same material. The possibility to control the size of the particles during their manufacturing, allows to precisely adjust their electronic and fluorescent properties. The inorganic nature of quantum dots makes them far more stable than organic fluorescent dyes. Quantum Dots Zn-Cu-In-S/ZnS, hydrophobic, Cd-free The non-toxic Zn-Cu-In-S/ZnS (core/shell) quantum dots are cadmium-free and are coated with hydrophobic organic ligands (dodecanethiol (DDT)). This modification allows good dispersibility in hexane, cyclohexane, toluene, chloroform, THF, pyridine and similar solvents but not in water, alcohols and ethers. The products are supplied as powder in 2 ml vials with septum. Thus, the quantum dots can be dispersed directly in the vial with the desired solvent. Zn-Cu-In-S/ZnS ROTI ® nanoMETIC λ max. 590 ±15 nm