Biocatalytic Self‐Assembly of Supramolecular Charge‐Transfer Nanostructures Based on n‐Type Semiconductor‐Appended Peptides1. (30th April 2014)

• Record Type: Journal Article
• Authors: Nalluri, Siva Krishna Mohan; Berdugo, Cristina; Javid, Nadeem; Frederix, Pim W. J. M.; Ulijn, Rein V.
• Is Part Of: Angewandte Chemie. Volume 126:Number 23(2014)
• Page Start: 5992
• Page End: 5997
• Publication Date: 2014-04-30
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201311158
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The reversible in situ formation of a self‐assembly building block (naphthalenediimide (NDI)–dipeptide conjugate) by enzymatic condensation of NDI‐functionalized tyrosine (<bold>NDI‐Y</bold>) and phenylalanine‐amide (<bold>F‐NH₂</bold>) to form <bold>NDI‐YF‐NH₂</bold> is described. This coupled biocatalytic condensation/assembly approach is thermodynamically driven and gives rise to nanostructures with optimized supramolecular interactions as evidenced by substantial aggregation induced emission upon assembly. Furthermore, in the presence of di‐hydroxy/alkoxy naphthalene donors, efficient charge‐transfer complexes are produced. The dynamic formation of <bold>NDI‐YF‐NH₂</bold> and electronic and H‐bonding interactions are analyzed and characterized by different methods. Microscopy (TEM and AFM) and rheology are used to characterize the formed nanostructures. Dynamic nanostructures, whose formation and function are driven by free‐energy minimization, are inherently self‐healing and provide opportunities for the development of aqueous adaptive nanotechnology.</p> </abstract>