An amphiphile based on polyethylene glycol (PEG) polymer and two molecular moieties (perylene diimide and C₇ fluoroalkyl, PDI and C₇F) attached to its termini assembles into crystalline films with long‐range order. The films reversibly switch from crystalline to amorphous above the PEG melting temperature. The adaptive behavior stems from the responsiveness of the PEG domain and the robustness of the PDI and C₇F assemblies. The hydrophobicity of the film can be controlled by heating, resulting in switching from highly hydrophobic to superhydrophilic. The long‐range order, reversible crystallinity switching, and the temperature‐controlled wettability demonstrate the potential of block copolymer analogues based on simple polymeric/molecular hybrids.

中文翻译：

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自适应晶体组件中的疏水性控制

基于聚乙二醇（PEG）聚合物和连接在其末端的两个分子部分（per二酰亚胺和C ₇氟代烷基，PDI和C ₇ F）的两亲物组装成具有长程有序的结晶膜。高于PEG熔融温度时，薄膜可逆地从结晶转变为非晶。自适应行为源于PEG域的响应能力以及PDI和C ₇ F组件的坚固性。膜的疏水性可以通过加热来控制，从而导致从高疏水性转变为超亲水性。远程有序，可逆的结晶度转换以及可控温度的润湿性证明了基于简单聚合物/分子杂化物的嵌段共聚物类似物的潜力。