User:James C. Schwabacher/Notebook/Protein-Templated Quantum Dots/2014/09/17

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  • Complete the QD synthesis begun yesterday
  • Begin precipitation of JCS 1 and JCS 2


  1. Create 20 mM sodium sulfide solution
    1. .024018 g of Sodium Sulfide (MW=240.18) needed for 5 mL
    2. Used .1415 g of Sodium Sulfide used (in 10 mL) because the sample is contaminated with excess water
  2. Add 4 mL of 20 mM sodium sulfide solution to reaction
    1. Allowed the mixture to stir vigorously for 15 minutes
    2. Poured contents (minus the stir bar) into a darkened falcon tube, to be stored at room temperature
    3. total synthesis time: 12 hrs + 15 minutes for Sodium Sulfide addition
  3. Removed 1 mL aliquot from JCS 2 for future testing with UVVIS and Fluorescence
  4. Added ~40 mL of 200 proof ethanol to each falcon tube (JCS 1 and JCS 2)
  5. Placed the samples in the freezer. I will check on Friday to see if any precipitation has occurred.