Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 51, Pages 11847-11851Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201902819
Keywords
aromatic peptide amphiphiles; biocatalytic self-assembly; energy transfer; porphyrin; supramolecular hydrogels
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Funding
- US Army Research Laboratory
- US Army Research office [W911NF-16-1-0113]
- US Air Force (AFOSR) [FA9550-15-1-0192]
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The controlled self-assembly of porphyrin derivatives (TCPP, tetrakis(4-carboxyphenyl)porphyrin) within Fmoc-protected (Fmoc=9-Fluorenylmethyloxycarbonyl) dipeptide (Fmoc-TL-NH2) nanofibers is demonstrated. The biocatalytic co-assembly in aqueous medium generated an energy transfer hydrogel. Depending on the concentrations of porphyrin used, the resulting nanofibrous gels show two distinct regions of self-assembly behavior that is, integration of TCPP into nanostructures to produce two-component co-assembly fibers, or heterogeneous self-aggregation of TCPP within the self-assembled matrix observed at higher concentrations. The mode of assembly directly impacts on the energy transfer efficiency of these nanostructures. These results show that reversible biocatalytic co-assembly of structural and functional components enables fine-tuning of peptide/porphyrin energy transfer nanostructures.
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