Here, we observed, via small-angle X-ray scattering and transmission electron microscopy, co-existing morphologies of lamellae and cylinders by precisely tailoring the volume fraction of each block in polystyrene-b-polyisoprene-b-polystyrene-b-poly(2-vinylpyridine) tetrablock terpolymer (S₁IS₂V). The PI cylinders are located inside the PS microdomains. This is due to the presence of the mid-block PS₂ which effectively isolates PI cylinders from the interface between PS and P2VP lamellae. The experimentally observed morphology is in good agreement with the predicted phase by self-consistent field theory. Furthermore, we successfully adjusted the position of the PI cylinders inside the PS lamellar microdomains by changing the length of the PS₂ mid-block. Finally, we obtained vertically oriented lamellae and cylinders in S₁IS₂V films with the aid of solvent annealing.

在这里，我们通过小角X射线散射和透射电子显微镜，通过精确调整聚苯乙烯-b-聚异戊二烯-b-聚苯乙烯-b-聚中每个块的体积分数，观察到了片层和圆柱体的共存形态。 2-乙烯基吡啶）四嵌段三元共聚物（S ₁ IS ₂ V）。PI 圆柱体位于 PS 微域内。这是由于中间块 PS ₂的存在，它有效地将 PI 圆柱体与 PS 和 P2VP 片层之间的界面隔离。实验观察到的形貌与自洽场论预测的相位非常吻合。_{此外，我们通过改变 PS 2}中间块的长度成功地调整了 PS 层状微域内 PI 圆柱体的位置。最后，我们借助溶剂退火在 S ₁ IS _{2 V 薄膜中获得了垂直取向的片层和圆柱体。}