In addition, the recent, well-discussed bulk photovoltaic effect (BPVE) and chiralityinduced spin selectivity (CISS) are observed in materials with noncentrosymmetric and chiral point group symmetry. Although such symmetry constraints, necessary to realize certain properties/phenomena, are widely recognized, it is always unclear how other symmetry components affect the corresponding properties/phenomena. To the best of our knowledge, it is not unveiled that whether chiral and polar systems can have a larger CISS effect than chiral and nonpolar systems. Thus, materials with different symmetries but nearly identical parameters should be studied. For example, given that chiral bowl-shaped π-conjugated molecules are stacked straight forming a two-dimensional (2D) assembly, eight assemblies with different symmetries can be considered (Figure ). They are labeled according to their asymmetric elements: (i) polar and enantiomeric (P/E, ①), (ii) nonpolar and enantiomeric (N/E, ②), (iii) polar and racemic-segregated (P/Rs, ③), (iv) nonpolar and racemic-segregated (N/Rs, ④), (v) polar and racemic-alternating (P/Ra, ⑤), (vi) Figure . Schematic illustration of possible two-dimensional packings of columns consisting of chiral bowl-shaped molecules.