Biocatalytic induction of supramolecular order

Research output: Contribution to journalArticlepeer-review

Authors

  • Andrew R Hirst
  • Sangita Roy
  • Meenakshi Arora
  • Apurba K Das
  • Nigel Hodson
  • Stephen Marshall
  • Nadeem Javid
  • Jan Sefcik
  • Job Boekhoven
  • Jan H van Esch
  • Stefano Santabarbara
  • Neil T Hunt
  • Rein V Ulijn

Colleges, School and Institutes

Abstract

Supramolecular gels, which demonstrate tunable functionalities, have attracted much interest in a range of areas, including healthcare, environmental protection and energy-related technologies. Preparing these materials in a reliable manner is challenging, with an increased level of kinetic defects observed at higher self-assembly rates. Here, by combining biocatalysis and molecular self-assembly, we have shown the ability to more quickly access higher-ordered structures. By simply increasing enzyme concentration, supramolecular order expressed at molecular, nano- and micro-levels is dramatically enhanced, and, importantly, the gelator concentrations remain identical. Amphiphile molecules were prepared by attaching an aromatic moiety to a dipeptide backbone capped with a methyl ester. Their self-assembly was induced by an enzyme that hydrolysed the ester. Different enzyme concentrations altered the catalytic activity and size of the enzyme clusters, affecting their mobility. This allowed structurally diverse materials that represent local minima in the free energy landscape to be accessed based on a single gelator structure.

Details

Original languageEnglish
Pages (from-to)1089-94
Number of pages6
JournalNature Chemistry
Volume2
Issue number12
Publication statusPublished - 2010