User:Nader A. Khamis/Notebook/Experimental Biological Chemistry AU Fall 2011/2011/11/08

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Objective

  • Determine the effects of constant temperature and changing temperature on the formation of fibers in solution.

Description

Gold NPs synthesis:

Two test tubes (Test Tube A and Test Tube B) were prepared.

  • Test Tube A contained 0.1ml of BSA, 0.1ml HAuCl4, and 0.8ml of H2O. Test Tube A was placed in the heatblock set at 78°C.
  • Test Tube B contained 0.1ml of BSA, 0.1ml HAuCl4, and 0.8ml of H2O. Test Tube B was placed in the heatblock set at 78°C, was removed in 30 minutes, and was left at room temperature for 10 minutes. Test Tube B was then placed back into the heatblock and the steps were repeated.

Data

  • Test Tube A was a clear purple solution.
  • Test Tube B contained purple fibers in clear colorless solution.

Notes

  • Both tubes had a molar ratio of HAuCl4 to BSA of 187.

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