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Biointerphases

Journal for Biophysical Chemistry

Figure 4 | Biointerphases

Figure 4

From: Probing the orientation of electrostatically immobilized cytochrome C by time of flight secondary ion mass spectrometry and sum frequency generation spectroscopy

Figure 4

Nitrogen concentrations determined by XPS analysis for CytoC immobilized onto NH 2 -SAMs (total nitrogen = solid red; normalized nitrogen = dashed red) or on COOH-SAMs (total nitrogen = solid black). Data points represent average N concentration from six analysis spots on two different samples. Error bars represent standard deviations.

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