Nanostructured Crystalline Comb Polymer of Perylenebisimide by Directed Self-Assembly: Poly(4-vinylpyridine)-pentadecylphenol Perylenebisimide

Authors

  • Rekha Narayan,

    1. Polymer & Advanced Material Laboratory, Polymer Science & Engineering Division, CSIR, NCL,Pune-411008, Maharashtra, India, Fax: 0091-20-25902615
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  • Prashant Kumar,

    1. Jawaharlal Nehru Centre for Advanced, Scientific Research (JNCASR), Jakkur, Bangalore, Karnataka, India
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  • K. S. Narayan,

    1. Jawaharlal Nehru Centre for Advanced, Scientific Research (JNCASR), Jakkur, Bangalore, Karnataka, India
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  • S. K. Asha

    Corresponding author
    1. Polymer & Advanced Material Laboratory, Polymer Science & Engineering Division, CSIR, NCL,Pune-411008, Maharashtra, India, Fax: 0091-20-25902615
    • Polymer & Advanced Material Laboratory, Polymer Science & Engineering Division, CSIR, NCL,Pune-411008, Maharashtra, India, Fax: 0091-20-25902615.
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Abstract

Well defined nanostructured polymeric supramolecular assemblies are formed when an asymmetric perylenebisimide substituted with ethylhexyl chains on one end and functionalized with 3-pentadecylphenol at the other termini (PDP-UPBI) is complexed with poly(4-vinylpyridine) (P4VP) via a non-covalent specific interaction such as hydrogen-bonding. The resulting P4VP(PDP-UPBI)n complexes are fully solution processable. The bulk structure and morphologies of the supramolecular film studied using small angle and wide angle X-ray scattering reveals highly crystalline nature of the complex. Thin film morphology of the 1:1 complex analyzed using transmission electron microscopy shows uniform lamellar structures in the domain range of 5–10 nm. A clear trend of improved electrical parameters in P4VP(PDP-UPBI) system compared to pristine (PDP-UPBI) is observed from space charge limited current measurements. In short, a simple and facile method to obtain spatially defined organization of n-type semiconductor perylenebisimide molecules using hydrogen bonding interactions with P4VP as the structural motif is showcased herein.

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