論文

査読有り
2016年9月

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

NANOTECHNOLOGY
  • Marina V. Makarova
  • ,
  • Yuji Okawa
  • ,
  • Elisseos Verveniotis
  • ,
  • Kenji Watanabe
  • ,
  • Takashi Taniguchi
  • ,
  • Christian Joachim
  • ,
  • Masakazu Aono

27
39
開始ページ
395303
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/0957-4484/27/39/395303
出版者・発行元
IOP PUBLISHING LTD

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). This is explained by the enhanced lifetime of the molecular excited state, because relaxation via the h-BN is suppressed due to a large band gap. We also demonstrate that on-surface polymerization on h-BN(0001) is possible even after the lithography process, which opens up the possibility of further electrical investigations.

Web of Science ® 被引用回数 : 10

リンク情報
DOI
https://doi.org/10.1088/0957-4484/27/39/395303
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/27573286
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000412626900001&DestApp=WOS_CPL

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