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The design and fabrication of supramolecular semiconductor nanowires formed by benzothienobenzothiophene (BTBT)-conjugated peptides

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info:eu-repo/semantics/openAccess

Date

2018

Author

Khalily, Mohammad Aref
Usta, Hakan
Ozdemir, Mehmet
Bakan, Gokhan
Dikecoglu, F.Begum
Gayle, Charlotte Edwards
Hutchinson, Jessica A.
Hamley, Ian W.
Dana, Aykutlu
Guler, Mustafa O.

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Citation

Nanoscale, 2018,10, 9987-9995

Abstract

?-Conjugated small molecules based on a [1]benzothieno[3,2-b]benzothiophene (BTBT) unit are of great research interest in the development of solution-processable semiconducting materials owing to their excellent charge-transport characteristics. However, the BTBT ?-core has yet to be demonstrated in the form of electro-active one-dimensional (1D) nanowires that are self-assembled in aqueous media for potential use in bioelectronics and tissue engineering. Here we report the design, synthesis, and self-assembly of benzothienobenzothiophene (BTBT)–peptide conjugates, the BTBT–peptide (BTBT-C3–COHN-Ahx-VVAGKK-Am) and the C8-BTBT–peptide (C8-BTBT-C3–COHN-Ahx-VVAGKK-Am), as ß-sheet forming amphiphilic molecules, which self-assemble into highly uniform nanofibers in water with diameters of 11–13(±1) nm and micron-size lengths. Spectroscopic characterization studies demonstrate the J-type ?–? interactions among the BTBT molecules within the hydrophobic core of the self-assembled nanofibers yielding an electrical conductivity as high as 6.0 × 10-6 S cm-1. The BTBT ?-core is demonstrated, for the first time, in the formation of self-assembled peptide 1D nanostructures in aqueous media for potential use in tissue engineering, bioelectronics and (opto)electronics. The conductivity achieved here is one of the highest reported to date in a non-doped state.

URI

http://acikerisim.agu.edu.tr/xmlui/handle/20.500.12573/18

Collections

  • Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü Koleksiyonu [81]
  • PubMed İndeksli Yayınlar Koleksiyonu [50]
  • Scopus İndeksli Yayınlar Koleksiyonu [136]
  • WoS İndeksli Yayınlar Koleksiyonu [153]



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