User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/12/03: Difference between revisions

Latest revision as of 22:18, 26 September 2017

Experimental Chemistry

To continue the porphyrin film salt tests

Remove the porphyrin film from the sodium sulfate solution.
Cut the film to the size of a cuvette
Measure the thickness of the film (2.6 mm)
Take a UV-Vis of the film.
Place the film into 2% wt H₂SO₄ solution until it turns green
Remove the film from the acid solution and place it in the previously prepared aluminum sulfate solution.

After sitting in the sodium sulfate the whole weekend, the porphyrin film had a light brown color.
The porphyrin film was sort of falling apart, broke into 2 pieces one large and one small, we used the larger one
High baseline occurs because the crosslinking makes the film not completely transparent

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