User:Andrew W Long/Notebook/CHEM-671 Research/2015/09/30

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Ocean Optics Redo(x2)

Today our group performed a reaction between AuNP fibers and proteinase-K, a protease that has previously degraded the fibers with ease. To our surprise, gold was not visible in solution at the end of the reaction today. Three observations about the solution were made:

  • 1. The fibers that were previously present in solution were no longer present (the protease had done it's job in digesting the protein fibers encasing the gold nanoparticles).
  • 2. The solution was not purple, so the reduced Au3+ was not present in the solution.
  • 3. The solution showed no absorbance in the yellow portion of the visible spectrum, so the gold was not present in its elemental (uncharged) form either.



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