Table 1 Quantification of elements (N, O, C) and N/C and O/C ratios obtained from the analysis of the XPS wide range spectra of pristine Gr/Cu foil, Treated Gr/Cu foil, TMeOP and TBP-grafted molecules.

From: Interface Chemistry of Graphene/Cu Grafted By 3,4,5-Tri-Methoxyphenyl

Sample

N 1 s

(%)

O 1 s

(%)

C 1 s

(%)

N/C

O/C

Pristine Gr/Cu

23.8

76.2

0.31

Treated Gr/Cu

3.3

12.5

84.2

0.04

0.15

TMeOP-grafted

0.7

21.8

77.5

0.01

0.28

TBP-grafted

1.2

34.3

64.5

0.02

0.53