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

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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 languageAmerican English
Pages (from-to)8871-8874
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number29
StatePublished - 16 Jul 2018

Bibliographical note

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


  • crystalline assemblies
  • hydrophobic effect
  • perylene diimides
  • self-assembly
  • supramolecular materials


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