User:Julia C. MacDougall/Notebook/Quantum Dots/2014/02/07

Biomaterials Design Lab

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Objective Learn how to maintain an OpenWetWare Notebook. Description Protocol To synthesize QD using BSA-ZnmMnn-mSn Prepare a 70C water bath Prepare a ring stand with a clamp and a 100mL round-bottom flask. Add stir bar. Add 1 mL of BSA/NaBH4 to the flask Add 2.25 mL of Zn stock solution Add 2.5 mL of Mn stock solution Add 13.25 mL water for final volume of 19 mL Stir mixture Adjust pH of solution to 9 with 1M NaOH add 0.4 mL HCl add 0.030 mL NaOH Seal container with rubber septum Bubble N2 through sample for 20 minutes using balloon/syringe/needle apparatus Add 2.5 mL of Na2S solution Put reaction vessel in water bath. Keep at constant temperature and stir for 3 hours Store reaction mixture at 4C Data Add data and results here... Notes After addition of NaOH and HCl, the white precipitate disappeared and the mixture was uniformly a clear light yellow color throughout.