Figure 3

(a) Variations in fluorescence spectra of 1.0 mM calcein/5.0 mM 3TEG-LPD aqueous solution under UV irradiation. (b) The normalized transient changes in fluorescence intensity at the peaks for 1.0 mM calcein/5.0 mM 3TEG-LPD in the absence and presence of UV irradiation and 6TEG-LPD aqueous solutions in the presence of UV irradiation.