We took advantage of the polycrystallinity and the porosity of the sheaf-like superstructure to demonstrate areas with different optical activity under polarized light. These functionalized crystals were obtained by diffusion of a chromophore (= sodium resorufin, SR) into nanosized channels resulted in the alignment of these dyes as constrained by the crystallographic structure. As the branches are not parallel to each other and orientated different from the central rod there is no global polarization alignment. These structural features areas are reflected in the optical properties of the sub-units of crystals.