Research Article
Binding of Coumarin 334 with β-Cyclodextrin and with C-Hexylpyrogallol[4]arene: Opposite Fluorescence Behavior
Table 5
Time-resolved fluorescence spectral data of C334 in C-HPA.
| | Concentration of C-HPA, mol dm−3 | Energy states | Lifetime (s) | Relative amplitude | | Standard deviation (s) |
| | 0 | T1 | 1.03 × 10−9 | 60.79 | 1.14 | 2.10 × 10−11 | | T2 | 3.05 × 10−9 | 39.21 | 4.12 × 10−11 |
| | 1.8 × 10−7 | T1 | 1.01 × 10−9 | 64.32 | 0.10 | 1.93 × 10−11 | | T2 | 3.11 × 10−9 | 35.68 | 4.53 × 10−11 |
| | 3.4 × 10−6 | T1 | 9.43 × 10−10 | 66.64 | 0.10 | 1.72 × 10−11 | | T2 | 2.86 × 10−9 | 33.36 | 3.94 × 10−11 |
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Excitation wavelength: 470 nm.
Emission wavelength: 504 nm.
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