User:Zachary I. Mendel/Notebook/Zacks Notebook/2014/02/11

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==February 11th==
==February 11th==
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==Goals==
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* We have to redo the dopamine addition that we did last Wednesday
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* We are going to test the activity of citrate-HRP-AuNPs using O2 binding assays
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==Procedures==
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<br>
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<br>
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Activity of citrate-HRP-AuNPs
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* We are going to use an assay provided by Dr. Hartings
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**The assay uses a reagent that changes color when HRP is added in addition to hydrogen peroxide
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**The hydrogen peroxide alone will change the color of the solution, so we will be comparing hydrogen peroxide alone with hydrogen peroxide and AuNPs
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*We also are going to run UV Vis of the samples to see how the absorption spectra changes over time
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Dopamine Coating
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<br>
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#Dissolve dopamine in 100mL Tris Buffer to have a 10mM solution at pH=8.5
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#Mix 17mL of AuNP solution with 17mL of the dopamine solution
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#Stir under air at room temperature for 1 hour
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#Purify by centrifuging and then redisperse in water.
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#Filtrate through syringe filters with cellulose acetate membranes with pore size of 1um
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#Make 2 solutions.
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## to be stored over night on lab bench
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## to be stored over night in the refrigerator
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==Notes==
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Revision as of 09:48, 11 February 2014

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February 11th

Goals

  • We have to redo the dopamine addition that we did last Wednesday
  • We are going to test the activity of citrate-HRP-AuNPs using O2 binding assays


Procedures



Activity of citrate-HRP-AuNPs

  • We are going to use an assay provided by Dr. Hartings
    • The assay uses a reagent that changes color when HRP is added in addition to hydrogen peroxide
    • The hydrogen peroxide alone will change the color of the solution, so we will be comparing hydrogen peroxide alone with hydrogen peroxide and AuNPs
  • We also are going to run UV Vis of the samples to see how the absorption spectra changes over time


Dopamine Coating

  1. Dissolve dopamine in 100mL Tris Buffer to have a 10mM solution at pH=8.5
  2. Mix 17mL of AuNP solution with 17mL of the dopamine solution
  3. Stir under air at room temperature for 1 hour
  4. Purify by centrifuging and then redisperse in water.
  5. Filtrate through syringe filters with cellulose acetate membranes with pore size of 1um
  6. Make 2 solutions.
    1. to be stored over night on lab bench
    2. to be stored over night in the refrigerator

Notes


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