Table 2.
Silver nanocolloids and PEGylated silver nanocolloids empty and loaded with betulinic acid together with their tentative Raman mode assignments (533 nm).
| SilCo (cm−1) | SilCo_BA (cm−1) | PEG_SilCo (cm−1) | PEG_SilCo_BA (cm−1) |
|---|---|---|---|
| 236 * | 242 * | ||
| 306 | 306 | ||
| 346 | 345 | 342 | |
| 389 | 386 | ||
| 678 | 677 | ||
| 712 | 712 | ||
| 757 | 760 | 760 | 756 |
| 842 | 849 | ||
| 894 | |||
| 929 | 900 | ||
| 955 | 956 | 955 | 953 |
| 1015 | 1062 | 1018 | |
| 1167 | 1138 | 1139 | |
| 1246 | |||
| 1298 | 1285 | 1286 | |
| 1380 | 1359 | 1388 | |
| 1414 | 1420 | ||
| 1548 * | 1534 * | ||
| 1638 | 1636 | 1603 | |
| 1703 | |||
| 2892 | 2826 | ||
| 2921 | 2928 | 2923 | |
| 3009 | 3009 | ||
| 3259 | 3260 | 3253 | |
| 3418 | 3422 | 3445 |
* Betulinic acid attributions.