Jang Jong Dae, Yoon Young-Jin, Jeon Sang-Woo, Han Young Soo, Kim Tae-Hwan
Quantum Beam Material Science Research Division, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea.
Department of Applied Plasma & Quantum Beam Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 54896, Korea.
Polymers (Basel). 2021 Jan 6;13(2):178. doi: 10.3390/polym13020178.
Pluronic amphiphilic block copolymers, well known to have a phase behavior can be controlled by external conditions, have a wide range of potential for applications such as nanotemplates or nanobuilding blocks. However, the phase behaviors of Pluronic block copolymer/additive complexes with highly ordered phases have not been fully investigated. Here, we report the unusual molecular weight-dependent self-assembly of Pluronic block copolymer/additive complexes. Depending on the temperature and additive, Pluronic P65 block copolymer with a lower molecular weight showed the closed loop-like (CLL) phase behavior with the disorder-order-disorder-order phase transition in aqueous solution, whereas Pluronic P105 and P85 block copolymers with higher molecular weights underwent highly ordered continuous phase transitions with face centered cubic (FCC), hexagonal, and lamellar phases. It is expected that the specific phase behavior of the block copolymer/additive complex can be applied in optical devices such as nanotemplates or optical sensors for a highly ordered superlattice. Furthermore, this study provides a new route to control the phase behavior of the block copolymers without a complicated process.
众所周知，普朗尼克两亲性嵌段共聚物具有可受外部条件控制的相行为，在诸如纳米模板或纳米构建块等应用方面具有广泛的潜力。然而，具有高度有序相的普朗尼克嵌段共聚物/添加剂复合物的相行为尚未得到充分研究。在此，我们报道了普朗尼克嵌段共聚物/添加剂复合物不同寻常的分子量依赖性自组装。根据温度和添加剂的不同，较低分子量的普朗尼克P65嵌段共聚物在水溶液中表现出具有无序-有序-无序-有序相变的闭环状（CLL）相行为，而较高分子量的普朗尼克P105和P85嵌段共聚物则经历了具有面心立方（FCC）、六方和层状相的高度有序连续相变。预计嵌段共聚物/添加剂复合物的特定相行为可应用于诸如纳米模板或用于高度有序超晶格的光学传感器等光学器件。此外，本研究提供了一种无需复杂过程即可控制嵌段共聚物相行为的新途径。
