Imaging thin films of organic molecules with the scanning tunnelling microscope

Research output: Contribution to journalReview article

Colleges, School and Institutes

Abstract

This article gives a topical review of the application of the scanning tunnelling microscope ( STM) to the characterisation of thin films ( typically monolayers) of organic molecules on surfaces. Three classes of molecules are considered: self- assembled thiol monolayers, macrocycles, e. g. porphyrins and cyclophanes, and passivated nanoparticles. Typically these molecules are deposited onto the surface of, e. g. gold/ graphite, from a solution. The STM is shown to be a tool not just for imaging, from the morphology of the film down to the level of individual molecules, but also for molecular manipulation and for electrical measurements. Indeed, an appropriate understanding of the electrical characteristics of the STM measurement is essential for successful imaging of organic ( or biological) molecules.

Details

Original languageEnglish
Pages (from-to)4275-4284
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume4
Issue number18
Early online date8 Aug 2002
Publication statusPublished - 6 Sep 2002