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    Dynamic Peptide Library for the Discovery of Charge Transfer Hydrogels

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    Publication date
    2015-11-25
    Author
    Berdugo, C.
    Nalluri, S.K.M.
    Javid, Nadeem
    Escuder, B.
    Miravet, J.F.
    Ulijn, R.V.
    Keyword
    Dynamic peptide library, self-assembly, gels
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Coupling of peptide self-assembly to dynamic sequence exchange provides a useful approach for the discovery of self-assembling materials. In here, we demonstrate the discovery and optimization of aqueous, gel-phase nanostructures based on dynamically exchanging peptide sequences that self-select to maximize charge transfer of n-type semiconducting naphthalenediimide (NDI)-dipeptide bioconjugates with various π-electron-rich donors (dialkoxy/hydroxy/amino-naphthalene or pyrene derivatives). These gel-phase peptide libraries are characterized by spectroscopy (UV–vis and fluorescence), microscopy (TEM), HPLC, and oscillatory rheology and it is found that, of the various peptide sequences explored (tyrosine Y-NDI with tyrosine Y, phenylalanine F, leucine L, valine V, alanine A or glycine G-NH2), the optimum sequence is tyrosine-phenylalanine in each case; however, both its absolute and relative yield amplification is dictated by the properties of the donor component, indicating cooperativity of peptide sequence and donor/acceptor pairs in assembly. The methodology provides an in situ discovery tool for nanostructures that enable dynamic interfacing of supramolecular electronics with aqueous (biological) systems.
    URI
    http://hdl.handle.net/10454/11428
    Version
    No full-text in the repository
    Citation
    Berdugo C, Nalluri SKM, Javid N et al (2015) Dynamic Peptide Library for the Discovery of Charge Transfer Hydrogels. ACS Applied Materials and Interfaces. 7(46): 25946-25954.
    Link to publisher’s version
    http://dx.doi.org/10.1021/acsami.5b08968
    Type
    Article
    Collections
    Life Sciences Publications

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