Research Article

Binding of Coumarin 334 with β-Cyclodextrin and with C-Hexylpyrogallol[4]arene: Opposite Fluorescence Behavior

Table 4

Absorption and fluorescence spectral data of C334 with various amounts of C-HPA.

Concentration of C-HPA, mol dm−3 Absorption maximum, nmAbsorbance, a.u.Emission maximum, nm

0462.00.0252504.0
1.77 × 10−6461.00.0320504.0
2.57 × 10−6460.00.0370504.0
3.37 × 10−6460.00.0402503.0
4.17 × 10−6460.00.0415503.0
4.97 × 10−6460.00.0450503.0
5.77 × 10−6459.00.0474503.0

Excitation wavelength: 461 nm.