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Self-assembled diacetylene molecular wire polymerization on an insulating hexagonal boron nitride (0001) surface

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    0464033 - FZÚ 2017 RIV GB eng J - Journal Article
    Makarova, Marina - Okawa, Y. - Verveniotis, E. - Watanabe, K. - Taniguchi, T. - Joachim, Ch. - Aono, M.
    Self-assembled diacetylene molecular wire polymerization on an insulating hexagonal boron nitride (0001) surface.
    Nanotechnology. Roč. 27, č. 39 (2016), 1-8, č. článku 395303. ISSN 0957-4484. E-ISSN 1361-6528
    Institutional support: RVO:68378271
    Keywords : molecular self-assembly * insulating substrate * molecular electronics * polydiacetylene
    Subject RIV: BJ - Thermodynamics
    Impact factor: 3.440, year: 2016

    The electrical characterization of single-polymer chains on a surface is an important step towards novel molecular device development. The main challenge is the lack of appropriate atomically flat insulating substrates for fabricating single-polymer chains. Here, using atomic force microscopy, we demonstrate that the (0001) surface of an insulating hexagonal boron nitride (h-BN) substrate leads to a flat-lying self-assembled monolayer of diacetylene compounds. The subsequent heating or ultraviolet irradiation can initiate an on-surface polymerization process leading to the formation of long polydiacetylene chains. The frequency of photo-polymerization occurrence on h-BN(0001) is two orders of magnitude higher than that on graphite(0001).
    Permanent Link: http://hdl.handle.net/11104/0263362

     
     
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