Functionalization, self-assembly, and photoswitching quenching for azobenzene derivatives adsorbed on Au(111)

Jongweon Cho, L. Berbil-Bautista, Niv Levy, Daniel Poulsen, Jean Frechet, Michael F. Crommie

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We have used scanning tunneling microscopy to investigate the structure and photoswitching behavior of azobenzene molecules functionalized with bulky spacer groups and adsorbed onto Au(111). We find that positioning tert-butyl legs in a canted arrangement on the azobenzene phenyl rings quenches photoisomerizability of the molecule on Au(111). Addition of cyano groups at the para positions changes the molecular self-assembly significantly, but does not alter the quenched photoisomerizability. This behavior likely arises from a combination of molecule-surface interactions, molecule-molecule interactions, and alteration of azobenzene electronic structure resulting from the position-specific addition of tert-butyl groups.

Original languageEnglish (US)
Article number234707
JournalJournal of Chemical Physics
Volume133
Issue number23
DOIs
StatePublished - Dec 21 2010

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Functionalization, self-assembly, and photoswitching quenching for azobenzene derivatives adsorbed on Au(111)'. Together they form a unique fingerprint.

Cite this