Abstract: The fluorescence spectrum of 8-hydroxy-1, 3, 6-pyrenetrisulfonate(HPTS or HOPSA) in the presence of CTMAB or/and β-CD were studied. The results show that the fluorescence spectrum of HPTSis largely changed as the cetyl trimethyl ammonium bromide (CTMAB) gradually is increased. When β-CD is gradually added into the system of HPTS-CTMAB, however, the changes described above were inverted. These changes were discussed based on the comparisons of fluorescence spectra for HPTSin various medium solutions, ¹H NMR spectra of HPTSor/and CTMAB solutions and the inclusion complexation between CTMAB and β-CD. We consider that the main reason for above effects is relative to the electric interaction between the anion HPTS and cations of CTMAB and the properties of the micro-environment round HOPSAmolecule.

Key words: Fluorescence spectrum of HPTS, CTMAB,β-CD inclusion complexation