Gel-based supramolecular ON-OFF switch from aryl-triazolyl peptides with excellent chiro-optical, thixotropic, and self-healing characteristics.
basic_science · Level V
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- Record sourced from PubMed, PMID 29411855.
- Also identified by DOI 10.1039/c8sm00050f.
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Abstract
Systematic structure-property optimization of an achiral gelator (aryl-triazolyl homo dipeptide, 1.0) through a fragment replacement approach led to the identification of a new chiral system (aryl-triazolyl dipeptide 1.4 having leucine as the C-terminal residue) which exhibits consistent and perfectly reversible chiro-optical responses on sol-gel transition that can work like an ON-OFF switch. The gelator 1.4 could also direct the assembly of 1.0 in a sergeant-soldier mode to give similar CD responses. In addition, its gels are mouldable, self-healing and highly thixotropic, making it important from an application standpoint.