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In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
10:22

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

Published on: June 16, 2014

Ambient ion soft landing.

Abraham K Badu-Tawiah1, Chunping Wu, R Graham Cooks

  • 1Chemistry Department, Purdue University, West Lafayette, Indiana 47907, USA.

Analytical Chemistry
|March 18, 2011
PubMed
Summary
This summary is machine-generated.

Ambient ion soft landing deposits ions from air onto surfaces at atmospheric pressure. This technique enables patterned surfaces and heterogeneous ion/surface reactions without mass analysis.

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Area of Science:

  • Analytical Chemistry
  • Surface Science
  • Physical Chemistry

Background:

  • Soft landing of ions is a technique for depositing ions onto surfaces.
  • Existing methods often require vacuum conditions and mass selection.
  • Ambient pressure techniques offer potential advantages for broader applications.

Purpose of the Study:

  • To describe a novel ambient ion soft landing technique.
  • To demonstrate the deposition of ions from air onto surfaces at atmospheric pressure.
  • To explore the utility of this method for surface patterning and chemical reactions.

Main Methods:

  • Ions generated via electrospray ionization are dried and polarity-selected.
  • Dry ions are deposited onto a selected surface without mass analysis.
  • Landed material and surfaces are characterized using mass spectrometry, spectrofluorimetry, and fluorescence microscopy.

Main Results:

  • Successful deposition of polyatomic ions from air onto surfaces under ambient conditions.
  • Demonstration of surface patterning with fluorescent compounds.
  • Utilization of deposited ions in heterogeneous ion/surface reactions, such as with d-lysine.

Conclusions:

  • Ambient ion soft landing is a viable technique for depositing ions onto surfaces without vacuum or mass selection.
  • The method allows for surface functionalization and the study of ion-surface interactions.
  • Control over ion drying and selection enables diverse applications in surface chemistry and materials science.