Hydrophobicity Control in Adaptive Crystalline Assemblies

被引：14

作者：

Cohen, Erez ^{[1
]}

Soffer, Yahel ^{[1
]}

Weissman, Haim ^{[1
]}

Bendikov, Tatyana ^{[2
]}

Schilt, Yaelle ^{[3
]}

Raviv, Uri ^{[3
]}

Rybtchinski, Boris ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Organ Chem, 234 Herzl St, IL-7610001 Rehovot, Israel

[2] Weizmann Inst Sci, Dept Chem Res Support, 234 Herzl St, IL-7610001 Rehovot, Israel

[3] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 29期

基金：

以色列科学基金会;

关键词：

crystalline assemblies; hydrophobic effect; perylene diimides; self-assembly; supramolecular materials; SHAPE-MEMORY POLYMERS; BLOCK-COPOLYMERS; SUPRAMOLECULAR POLYMERS; POLY(ETHYLENE OXIDE); SURFACES; WETTABILITY; ROD; TRANSITION; COMPONENTS; CHEMISTRY;

D O I：

10.1002/anie.201801912

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An amphiphile based on polyethylene glycol (PEG) polymer and two molecular moieties (perylene diimide and C-7 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.

引用

页码：8871 / 8874

页数：4

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