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Photophysical properties of squaraines and their complexes with M2 in H2O.
| S1PEG | M2 ⊃ S1PEG | S2PEG | M2 ⊃ S2PEG | S3PEG | M2 ⊃ S3PEG | |
|---|---|---|---|---|---|---|
| Abs (nm) | 608 | 638 | 695 | 722 | 795 | 809 |
| Em (nm) | 665 | 697 | 731 | 753 | 815 | 829 |
| Φfa | 6% | 25% | 3% | 19% | 7% | 11% |
Quantum yields of S1PEG and M2 ⊃ S1PEG were measured relative to bis(N,N-dimethylaminophenyl)squaraine, quantum yields of S2PEG and M2 ⊃ S2PEG were measured relative to cryptocyanine, and quantum yields of S3PEG and M2 ⊃ S3PEG were measured relative to ICG [30].
