Tailoring electronic states of a single molecule using adamantane-based molecular tripods

Satoshi Katano, Yousoo Kim, Toshikazu Kitagawa, Maki Kawai

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Adsorption structures and electronic states of molecular tripods, having a Br atom (BATT) and a ferrocene derivative (Ferrocene-ATT) at the head part of the adamantane-based trithiolate, adsorbed on Au(111) have been investigated using low temperature scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). We found that BATT and Ferrocene-ATT form self-assembled monolayers (SAMs), and their orderings are identical to one another, which suggests that the adsorption structure of adamantane-based molecular tripods is independent of the type of functional substituent attached to the head part. The electronic states originated from the ferrocene group were confirmed in the STS spectrum of Ferrocene-ATT whereas those are absent in the BATT spectrum. We note that the ferrocene part has few interactions with the Au substrate owing not only to the upright geometry of Ferrocene-ATT but also to the insulative properties of the adamantane base. The STS mapping revealed the spatial distribution of the electronic state of Ferrocene-ATT.

Original languageEnglish
Pages (from-to)14229-14233
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number34
DOIs
Publication statusPublished - 2013 Sep 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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