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. Author manuscript; available in PMC: 2008 Dec 9.
Published in final edited form as: Langmuir. 2006 Sep 12;22(19):8197–8204. doi: 10.1021/la060754c

Table 4.

Angle dependent C 1s and O 1s high resolution XPS results of the hydroxyl and the carboxyl terminated layers.

Take-off Angle
θ[°] C 1s [%] O 1s [%]


285.0 286.3 289.0 530.1 531.4 533.0 [eV]
OH 70 76.2 19.4 4.4 38.2 35.1 16.7
35 77.4 17.5 5.1 56.0 31.1 12.9
0 81.5 16.0 2.5 57.6 28.5 13.9
285.0 286.5 288.9 530.1 531.4 532.9 [eV]
COOH 70 74.7 16.6 8.6 44.7 27.6 27.8
35 77.1 15.4 7.5 52.4 35.7 12.0
0 79.7 12.6 7.6 55.2 32.9 11.9