Table 1. Band Maxima of Absorption(λab) and Fluorescence(λfl) and Stokes Shift (Δλ)a of Acr with and without Clay in Water.
| compound | environment | λab/nm (cm–1) | λfl/nm (cm–1) | Δλ/cm–1 |
|---|---|---|---|---|
| Acr+ | water | 444 (22,523) | 462 (21,645) | 878 |
| Acr+ | Sap1.2 | 448 (22,321) | 465 (21,505) | 816 |
| PhAcr+ | water | 454 (22,026) | 485 (20,619) | 1408 |
| PhAcr+ | Sap1.0 | 460 (21,739) | 490 (20,408) | 1331 |
| PhAcr+ | Sap1.2 | 465 (21,505) | 490 (20,408) | 1097 |
| PhAcr+ | Sap1.4 | 465 (21,505) | 490 (20,408) | 1097 |
| PhAcr+ | Sap1.6 | 468 (21,368) | 490 (20,408) | 959 |
a
Stokes shift is defined as λab – λfl.