A tale of tails: Alkyl chain directed formation of 2D porous networks reveals odd-even effects and unexpected bicomponent phase behavior

Elke Ghijsens, Oleksandr Ivasenko, Kazukuni Tahara, Hiroyuki Yamaga, Shintaro Itano, Tatyana Balandina, Tobe Yoshito, Steven De Feyter*

*Corresponding author for this work

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

Supramolecular self-assembly of suitably functionalized building blocks on surfaces can serve as an excellent test-bed to gain understanding and control over multicomponent self-assembly in more complex matter. Here we employ a powerful combination of scanning tunnelling microscopy (STM) and molecular modeling to uncover two-dimensional (2D) crystallization and mixing behavior of a series of alkylated building blocks based on dehydrobenzo[12]annulene, forming arrays of nanowells. Thorough STM investigation employing high-resolution spatial imaging, use of specially designed marker molecules, statistical analysis and thermal stability measurements revealed rich and complex supramolecular chemistry, highlighting the impact of odd-even effects on the phase behavior. The methodology and analysis presented in this work can be easily adapted to the self-assembly of other alkylated building blocks.

Original languageEnglish
Pages (from-to)8031-8042
Number of pages12
JournalACS Nano
Volume7
Issue number9
DOIs
StatePublished - 24 Sep 2013

Keywords

  • chirality
  • multicomponent
  • odd-even
  • self-assembly

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