Creating favorable geometries for directing organic photoreactions in alkanethiolate monolayers

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Moonhee Kim
  • J. Nathan Hohman
  • Yang Cao
  • Kendall N. Houk
  • Hong Ma
  • Paul S. Weiss

Detail(s)

Original languageEnglish
Pages (from-to)1312-1315
Journal / PublicationScience
Volume331
Issue number6022
Publication statusPublished - 11 Mar 2011
Externally publishedYes

Abstract

The products of photoreactions of conjugated organic molecules may be allowed by selection rules but not observed in solution reactions because of unfavorable reaction geometries. We have used defect sites in self-assembled alkanethiolate monolayers on gold surfaces to direct geometrically unfavorable photochemical reactions between individual organic molecules. High conductivity and stochastic switching of anthracene-terminated phenylethynylthiolates within alkanethiolate monolayers, as well as in situ photochemical transformations, have been observed and distinguished with the scanning tunneling microscope (STM). Ultraviolet light absorbed during imaging increases the apparent heights of excited molecules in STM images, a direct manifestation of probing electronically excited states.

Citation Format(s)

Creating favorable geometries for directing organic photoreactions in alkanethiolate monolayers. / Kim, Moonhee; Hohman, J. Nathan; Cao, Yang; Houk, Kendall N.; Ma, Hong; Jen, Alex K.-Y.; Weiss, Paul S.

In: Science, Vol. 331, No. 6022, 11.03.2011, p. 1312-1315.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal