Analytical Sciences

Determination of SDS Using Fluorescent γ-Cyclodextrin Based on TICT in Aqueous Solution

Yoshikazu OKA,* Shinnosuke NAKAMURA,* Yusuke UETANI,* Tatsuya MOROZUMI,** and Hiroshi NAKAMURA**

*Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
**Section of Materials Science, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan

Fluorescent γ-cyclodextrin derivatives, modified using N-phenyl-x-anthracenecarboxamido (ACs; x = 9, 1), were synthesized and investigated using fluorescence and UV-vis spectroscopy. Fluorescence enhancements of ACs were observed up to 12-fold by the addition of sodium dodecyl sulfate (SDS) below the critical micellar concentration (CMC). In the presence of a nonionic surfactant, such as Triton X-100, fluorescence spectra were scarcely changed. The fluorescence selectivity between SDS and Triton X-100 was clarified from the different spectral behaviors by circular dichroism and ¹H NMR spectroscopies.

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