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

12 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	American 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

Funding Information:
This work was supported by the Israel Science Foundation and the Helen and Martin Kimmel Center for Molecular Design. The SEM studies were conducted at the Irving and Cherna Moskowitz Center for Nano and BioNano Imaging (Weizmann Institute).

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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title = "Hydrophobicity Control in Adaptive Crystalline Assemblies",

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 - Soffer, Yahel

AU - Weissman, Haim

AU - Bendikov, Tatyana

AU - Schilt, Yaelle

AU - Raviv, Uri

AU - Rybtchinski, Boris

N1 - Funding Information: This work was supported by the Israel Science Foundation and the Helen and Martin Kimmel Center for Molecular Design. The SEM studies were conducted at the Irving and Cherna Moskowitz Center for Nano and BioNano Imaging (Weizmann Institute). Publisher Copyright: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

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N2 - 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.

AB - 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.

KW - crystalline assemblies

KW - hydrophobic effect

KW - perylene diimides

KW - self-assembly

KW - supramolecular materials

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JF - Angewandte Chemie - International Edition

IS - 29

ER -

Hydrophobicity Control in Adaptive Crystalline Assemblies

Abstract

Bibliographical note

Keywords

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