Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Polarization modulation-infrared reflection absorption spectroscopic mapping.

Gerald Steiner1, Valdas Sablinskas, Marco Kitsche

  • 1Institute of Analytical Chemistry, Dresden University of Technology, Dresden, Germany. gerald.steiner@chemie.tudreden.de

Analytical Chemistry
|April 18, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Characterization of pericardium collagen stiffening after riboflavin/UV- and low energy electron irradiation by IR spectroscopic imaging.

International journal of biological macromolecules·2026
Same author

¹H-NMR serum metabolomic profiling from clinical routine identifies signatures of progressive melanoma metastasis.

Scientific reports·2026
Same author

Investigation of corneal hydration and the impact of cross-linking therapy on water retention using Brillouin spectroscopy, Raman spectroscopy and polarization-sensitive optical coherence tomography.

Frontiers in bioengineering and biotechnology·2025
Same author

Algorithm-based intraoperative diagnosis of liver tumors using infrared spectroscopy.

Scientific reports·2025
Same author

Comparative analysis of intraoperative thermal and optical imaging for identification of the human primary sensory cortex.

Journal of biomedical optics·2025
Same author

Molecular Spectroscopy for the Biochemical Composition Analysis of Patient-Derived Pancreatic Cancer Organoids.

Cancer medicine·2024
Same journal

Heterojunction-Enhanced Interfacial Evanescent-Tunable Fiber Optic Probe for Amplification-free CRISPR/Cas12a-Based Rapid and Ultrasensitive Detection of MPXV.

Analytical chemistry·2026
Same journal

Tunable Charge Transfer in Europium Metal-Organic Frameworks for Ratiometric Sensing of a Sarin Simulant.

Analytical chemistry·2026
Same journal

A β-Cyclodextrin/Ag<sub>2</sub>O@MWCNT-Based Stochastic Platform for the Simultaneous Molecular Enantiorecognition and Enantioanalysis of Twelve Amino Acids in Biological Matrices.

Analytical chemistry·2026
Same journal

The ACS at 150: The History of Analytical Chemistry Publications and a Century of Progress.

Analytical chemistry·2026
Same journal

Machine Learning-Enabled Image Analysis of Complex Chemical Mixtures: Synthetic Urine Droplets as a Test System.

Analytical chemistry·2026
Same journal

H<sub>2</sub>O<sub>2</sub>/Viscosity Tandem-Locked Fluorescent Probes Based on an In Situ Fluorophore Synthesis Strategy for Colitis Imaging and Diagnosis.

Analytical chemistry·2026
See all related articles

Polarization modulation-infrared reflection absorption spectroscopy (PM-IRRAS) mapping reveals molecular orientation on surfaces. This technique can identify variations within ultrathin films, offering insights into molecular arrangement.

Area of Science:

  • Surface science
  • Spectroscopy
  • Materials characterization

Background:

  • Characterizing molecular orientation on surfaces is crucial for understanding film properties.
  • Existing methods may lack the resolution or specificity needed for detailed analysis.
  • Ultrathin films are vital in various applications, from electronics to biomaterials.

Purpose of the Study:

  • To develop and validate a polarization modulation-infrared reflection absorption spectroscopy (PM-IRRAS) mapping technique.
  • To investigate the molecular orientation of octadecanephosphonic acid (OPA) on microstructured aluminum oxide/gold surfaces.
  • To assess the capability of PM-IRRAS mapping in revealing surface inhomogeneities.

Main Methods:

  • Coupling PM-IRRAS with stepwise sample mapping.

Related Experiment Videos

  • Developing a dedicated optical setup for PM-IRRAS mapping.
  • Utilizing a common Fourier-transform infrared (FT-IR) spectrometer.
  • Achieving a lateral resolution of approximately 45 µm, limited by energy, not diffraction.

    • Main Results:

    • OPA molecules preferentially attach to the aluminum oxide surface in a spotty manner.
    • Highly ordered films of OPA are formed on the aluminum oxide.
    • Phosphonic acid adsorbed on gold exhibits a lower degree of ordering, primarily in a tridentate bonding mode.
    • PM-IRRAS mapping successfully identified inhomogeneities within the ultrathin films.

    Conclusions:

    • PM-IRRAS mapping is an effective technique for characterizing molecular orientation across surfaces.
    • The method provides valuable insights into the spatial distribution and ordering of molecules in ultrathin films.
    • PM-IRRAS mapping demonstrates significant potential for analyzing surface inhomogeneities in functional films.