Hydrophobicity Control in Adaptive Crystalline Assemblies

Erez Cohen; Yahel Soffer; Haim Weissman; Tatyana Bendikov; Yaelle Schilt; Uri Raviv; Boris Rybtchinski

doi:10.1002/anie.201801912

Hydrophobicity Control in Adaptive Crystalline Assemblies

Erez Cohen, Yahel Soffer, Haim Weissman, Tatyana Bendikov, Yaelle Schilt, Uri Raviv, Boris Rybtchinski^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	8871-8874
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	29
DOIs	https://doi.org/10.1002/anie.201801912
State	Published - 16 Jul 2018

Bibliographical note

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

crystalline assemblies
hydrophobic effect
perylene diimides
self-assembly
supramolecular materials

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10.1002/anie.201801912

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abstract = "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.",

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AU - Raviv, Uri

AU - Rybtchinski, Boris

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Hydrophobicity Control in Adaptive Crystalline Assemblies

Abstract

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Keywords

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