4.3 Article

A peony-flower-like hierarchical mesocrystal formed by diphenylalanine

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JOURNAL OF MATERIALS CHEMISTRY
卷 20, 期 32, 页码 6734-6740

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm00110d

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资金

  1. National Nature Science Foundation of China [20833010/B0305]
  2. National Basic Research Program of China (973 program) [2009CB930101]
  3. Chinese Academy of Sciences
  4. German Max-Plank Society
  5. Alexander von Humboldt Foundation

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A facile method is reported to manipulate a diphenylalanine peptide into hierarchically ordered structures with interesting peony-like flower morphology in the organic solvent tetrahydrofuran. The flowers formed in THF and showed, by scanning electron microscopy, that they are actually flake-built spherical aggregations, while the aggregations of FF that formed in other chosen organic solvents, such as DMSO and pyridine, show dispersive flakes. The building of the flower-like architectures is correlated to a nonclassical crystallization pathway. The similarity between the as-obtained peptide mesocrystals formed in different solvents has been investigated and discussed. Due to the roughness of the hierarchical peptide assemblies, an antiwetting surface is readily constructed with a low surface free energy fluoroalkylsilane.

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