Objective
- Complete the QD synthesis begun yesterday
Protocol
- Create 20 mM sodium sulfide solution
- .024018 g of Sodium Sulfide (MW=240.18) needed for 5 mL
- Used .1977 g of Sodium Sulfide used because the sample is contaminated with excess water
- Add 4 mL of 20 mM sodium sulfide solution to reaction
- Allowed the mixture to stir vigorously for 15 minutes
- Poured contents (minus the stir bar) into a darkened falcon tube, to be stored at room temperature
- total synthesis time: 11 hrs and 20 minutes + 15 minutes for Sodium Sulfide addition
Notes
- Before sulfide addition the reaction was a very pale yellow. After sulfide addition the reaction was darkened (possibly the pale brown the literature discussed)
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