Quantum dots: a new key for a non-invasive cancer detection, diagnosis and therapy

Abstract

Quantum dots (QDs) are semiconductor inorganic nanomaterials and their size ranges within the nanometer scale. They have useful luminescence characteristics: the absorption spectra are wide and continuous, and they show narrow emissions. Consequently, QDs are employed in nanomedicine. QDs have the ability to detect cancer cells and target them in different manners. Furthermore once they are delivered they can be successfully used in imaging of target cells, principally with invitro and invivo studies. Apart from detecting cancer cells, they also play an important role in therapies for cancer. QDs can be synthesised by hot injection method, one of the methods most frequently used nowadays. Even with the substantial benefits, levels of toxicity remain too high and this is preventing progress. Therefore it is still not used on humans due to the potential, harmful implications on the health of humans.