Characteristic absorption bands of the prepared materialsa.
| Sample | Wavelength (cm−1) | ||||||
|---|---|---|---|---|---|---|---|
| Fe–O | Ar | Ar–N | N–B–N | N Q N | H2O | OH | |
| IO | 396/555 | — | — | — | — | 1632 | 3295 |
| NPIO | 525 | — | — | — | — | 1632 | 3164 |
| PAni | — | 820 | 1115 | 1308/1491 | 1576 | — | — |
| PAni/NPIO | 403/504 | 823 | 1110 | 1420 | 1573 | 1648 | 3265 |
Ar is aromatic.