Table 1. Film Composition as Determined from by XPS in Normal Emission (0°, top) and Grazing Emission (80°, bottom)a.
| 0° | CCF3 | Chetero | Calkyl | Ndema | FCF3 | OSO3 | SSO3 |
|---|---|---|---|---|---|---|---|
| atom number | 0.9 /0.9 (1) | 3.1 /3.1 (3) | 2.1 /2.0 (2) | 0.9 /1.1 (1) | 3.2 /3.0 (3) | 3.0 /3.0 (3) | 0.9 /1.0 (1) |
| BE/eV | 293.0/292.5 | 286.9/286.6 | 285.6/ 285.3 | 402.5/402.2 | 689.1/ 688.5 | 532.6/ 532.0 | 168.9/168.4 |
| 80° | CCF3 | Chetero | Calkyl | Ndema | FCF3 | OSO3 | SSO3 |
|---|---|---|---|---|---|---|---|
| atom number | 1.0 /1.0 (1) | 3.2 /3.1 (3) | 2.1 /1.9 (2) | 0.9 /1.0 (1) | 3.2 /3.3 (3) | 2.6 /2.7 (3) | 1.0 /1.1 (1) |
| BE/eV | 293.1/292.5 | 287.0/286.5 | 285.8/285.2 | 402.6/ 402.2 | 689.2/ 688.5 | 532.8/ 532.0 | 169.1/ 168.4 |
a
Also denoted are the corresponding binding energies. The bold values (left) corresponds to a 2.6 nm thick film of [dema][TfO] on Ag(111) at 90 K prepared by PVD, the italic values (right) to a macroscopic droplet of ∼0.1 mm thickness at RT; the nominal composition in atom numbers are given in (brackets). For S 2p, the binding energy (BE) of the S 2p3/2 peak is given; the S 2p1/2 peak is at 1.18 eV higher BE.