Table 4 Absorption and fluorescence spectral data of Ponceau 4R, Sunset Yellow FCF and Tartrazine in selected LCs.
LCs | \({\lambda }_{1max}\)(Abs)(nm) | \({\lambda }_{1max}\)(Fluo)(nm) | \({\upphi }_{1}\) | \({\lambda }_{2max}\)(Abs)(nm) | \({\lambda }_{2max}\)(Fluo)(nm) | \({\phi }_{2}\) |
|---|---|---|---|---|---|---|
Ponceau 4R | ||||||
ML-0643 | 510 | 582 | 0.22 | 547 | 748 | 0.21 |
MLC-6292 | 512 | 585 | 0.13 | 548 | 752 | 0.30 |
MAT-160968 | 515 | 587 | 0.09 | 543 | 753 | 0.21 |
MLC-2082 | 511 | 580 | 0.11 | 546 | 759 | 0.28 |
MLC-2053 | 512 | 575 | 0.14 | 545 | 756 | 0.29 |
MLC-2144 | 517 | 587 | 0.09 | 548 | 766 | 0.10 |
LCs | \({\lambda }_{1max}\)(Abs)(nm) | \({\lambda }_{1max}\)(Fluo)(nm) | \({\phi }_{1}\) | \({\lambda }_{2max}\)(Abs)(nm) | \({\lambda }_{2max}\)(Fluo)(nm) | \({\phi }_{2}\) |
|---|---|---|---|---|---|---|
Sunset yellow FCF | ||||||
ML-0643 | 485 | 551 | 0.26 | 539 | 749 | 0.23 |
MLC-6292 | 484 | 548 | 0.20 | 532 | 752 | 0.06 |
MAT-160968 | 481 | 549 | 0.22 | 538 | 767 | 0.22 |
MLC-2082 | 480 | – | - | 533 | 759 | 0.06 |
MLC-2053 | 479 | 550 | 0.12 | 530 | 788 | 0.05 |
MLC-2144 | 478 | 551 | 0.06 | 532 | 790 | 0.18 |
LCs | \({\lambda }_{1max}\)(Abs)(nm) | \({\lambda }_{1max}\)(Fluo)(nm) | \({\phi }_{1}\) | \({\lambda }_{2max}\)(Abs)(nm) | \({\lambda }_{2max}\)(Fluo)(nm) | \({\phi }_{2}\) |
|---|---|---|---|---|---|---|
Tartrazine | ||||||
ML-0643 | 442 | 522 | 0.29 | 487 | – | – |
MLC-6292 | 437 | 513 | 0.21 | 484 | 801 | 0.16 |
MAT-160968 | 442 | 517 | 0.19 | 480 | 802 | 0.12 |
MLC-2082 | 443 | 518 | 0.16 | 484 | 801 | 0.13 |
MLC-2053 | 445 | 516 | - | 481 | 799 | - |
MLC-2144 | 448 | 514 | 0.15 | 480 | 806 | 0.23 |
