One-pot reflux

Now, Jun-Jie Zhu and his team from Nanjing University, China, have come up with a straightforward protocol for synthesizing CdSeTe alloyed quantum dots (A-QDs). The group has shown that the material can be used as an effective NIR-emitting probe for cell imaging and biosensing and has published its results in the journal Nanotechnology.

By changing the size and/or composition of these water-soluble A-QDs, the emission can be tuned from the visible to the NIR region (as shown in the image above).

Owing to the excellent NIR-emitting properties of the CdSeTe A-QDs, research is now underway to design and improve such "smart" materials for targeted and traceable drug delivery in cells and small animals. This research is supported by grants from the National Natural Science Foundation of China.