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Biointerphases

Journal for Biophysical Chemistry

Table 2 XPS elemental compositions of PNIPAAm surface grafted via ARGET–ATRP using Sn[EH]2 (I) and ascorbic acid (II)

From: ARGET–ATRP Synthesis and Characterization of PNIPAAm Brushes for Quantitative Cell Detachment Studies

Atom

Theoretical

Experimental (I)

Experimental (II)

C

75

77 ± 0.6

76.4 ± 0.2

N

12.5

10.4 ± 0.5

12 ± 0.2

O

12.5

9.5 ± 0.8

11.6 ± 0.2

Sn (I)

0

3.1 ± 0.4

0

C–C/C–H

66.7

70.2 ± 8.2

64.5 ± 4.8

C–N

16.7

11.9 ± 1.4

18.8 ± 3.8

N–C=O

16.7

17.9 ± 7.1

16.7 ± 1.2

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