IGEM:American University/2009/Notebook/BCHM 2/2017/03/08
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Today, we will use Myoglobin (which gave us the best resolution so far) to analyze different procedures for producing CdS QDs.
We will be trying Na2S as our sulfur source, which is what we have been using for the production of our ZnS QDs. This will be compared to our other sulfur source, potassium thioacetate.
In this article: http://pubs.acs.org/doi/pdf/10.1021/cm0628799
The authors discuss three major points that are important for the best production of CdS QDs. Their reaction utilized 40 mM Ammonium acetate as well as 75 mM ammonium water. They also added the sulfur source last and very slowly, which we will try in today's experiment.
(2) slow supply of sulfide ions into the reaction solution; and
(3) the addition of S source must be the final step.
Part 1: Final Concentrations
Part 2: Final Concentrations