TABLE 2.
SHG analysis of DTC and thiol adsorption on Au
| adsorbate | c (μm)a | Isat | K(M−1 s−1) |
|---|---|---|---|
| bis-HE-DTC | 10 | 0.325 | 250 |
| 5 | 0.387 | 546 | |
| 2.5 | 0.331 | 87 | |
| Pro-DTC | 10 | 0.532 | 490 |
| 5 | 0.563 | 890 | |
| 2.5 | 0.545 | 486 | |
| bis-EG6-DTC | 5 a | 0.303 | 1165 |
| 5 b | 0.277 | 1237 | |
| 5 c | 0.259 | 836 | |
| P10LRR-DTC | 50 d | 0.277 | 3 |
| ME-DTC e | 5 | 0.124 | 319 |
| EG6-SH | 5 | 0.358 | n/af |
| 2.5 | 0.414 | 4205 | |
| 1.25 | 0.418 | 4725 |
a
Diluted with deionized water (pH 6).
b
Diluted with pH 7.5 buffer.
c
Diluted with pH 9.5 buffer.
d
Estimated from extinction coefficient of Pro-DTC.
e
XPS suggests formation of byproducts during SHG analysis.
f
Insufficient data was collected, due to the speed with which saturation was achieved.