Direct Observation of Photo Switching in Tethered Spiropyrans Using the Interfacial Force Microscope

B. C. Bunker, B. I. Kim, J. E. Houston, R. Rosario, A. A. Garcia, M. Hayes, D. Gust, S. T. Picraux

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The interfacial force microscope has been used to establish the changes in the surface chemistry that accompany photoactivated opening and closing of rings in tethered spiropyran monolayers. Contact potential measurements show that ring opening via ultraviolet light creates a more polar surface, while exposure to visible light closes the rings and resets the surface. Normal force measurements show that open ring structures are protonated in electrolyte solutions, amplifying the switching of electrical double-layer forces.

Original languageEnglish
Pages (from-to)1723-1727
Number of pages5
JournalNano letters
Volume3
Issue number12
DOIs
Publication statusPublished - Dec 1 2003

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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    Bunker, B. C., Kim, B. I., Houston, J. E., Rosario, R., Garcia, A. A., Hayes, M., Gust, D., & Picraux, S. T. (2003). Direct Observation of Photo Switching in Tethered Spiropyrans Using the Interfacial Force Microscope. Nano letters, 3(12), 1723-1727. https://doi.org/10.1021/nl034759v