Semiconducting nanocrystals dots

Semiconducting nanocrystals, usually CdSe-ZnS crystals a few nanometers in diameter, called quantum dots, can be useful for in vivo imaging of biochemical dynamics but still suffer from three limitations.51 The most severe problem is that quantum dots blink at probability distributions that lead to loss of continuity in keeping track of individual molecules, limiting the ability to measure the dynamics and mechanisms of biophysical chemistry in vivo and ex vivo. Some significant fraction of fabricated quantum dots appear to be totally dark, reducing... 

ECL-based nanocomposite biosensors have resulted from the combination of semiconducting nanocrystals or quantum dots with other nanomaterials. For example, lie et al. prepared... 

Quantum dots (QDs) are semiconducting inorganic nanocrystals in which charge carriers are spatially confined, which gives rise to a number of interesting quantum effects such as size-tuneable absorption bands and an exceptionally stable photoluminescence. Owing to their unique photophysical properties, QDs have been mostly exploited as photo-luminescent biolabels and nanosensors. ... 

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