Quantum dots, are nanoparticles generally made up of family II-Vl or family III-V elements. Its size is less than or close to the Exciton Bohr radius (usually less than 10nm). Such dots have obvious Quantum effects.
Compared with traditional dyes, Quantum dots have so many advantages:
1. Long-time dynamic tracer
2. Tunable emission wavelength
3. High fluorescence intensity and stability
4. Wide and continuous excitation spectrum
5. Simultaneous imaging of multi-index and multi-target
The special optical properties of Quantum dots make it have great application prospect in biochemistry, molecular biology, cytobiology, genomics, proteomics, drug screening and biomacromolecule interaction.