Complexation of the Surfactants Triton X-102 and Igepal CA720 with β -Cyclodextrin

The surfactants Igepal CA720 (IplCA7) and Triton X-102 (TX-102) and their interaction with β-cyclodextrin were studied with the use of various photophysical and photochemical methods. The fluorescence and absorbance spectra of these surfactants are concentration dependent and markedly enhanced in the presence of β-cyclodextrin. Nuclear magnetic resonance (NMR) spectroscopy infers that the phenyl group of these surfactants is included inside the β-CDx cavity. The orientation of the phenyl moiety of the surfactant molecule inside the β-CDx cavity was investigated with the use of induced circular dichroism (ICD).