Reflection-absorption infrared spectrometry

Geriche A., Huhnerfiiss H., In situ investigation of saturated long-chain fatty acids at the air/water interface by external infrared reflection-absorption spectrometry, J. Pf s. Chem. 97 (1993) pp. 12899-12908. 

R. Mendelsohn, J.W. Brauner, and A. Gericke, External Infrared Reflection Absorption Spectrometry of Monolayer Films at the Air-Water Interface, Ann. Rev. Phys. Chem. 46 (1995) 305. (Review theory and practice of IRRAS as applied to Langmuir monolayers determination of conformational states of hydrocarbon tails and H-bonding, ionization states of head groups, and molecular orientation illustrated with experimental results on monolayers of single-chain amphiphiles, phospholipids and proteins.)... 

Mendelsohn R, Brauner J W and Gericke A 1995 External infrared reflection absorption spectrometry of monolayer films at the air-water interface Ann. Rev. Rhys. Chem. 46 305-34... 

INFRARED REFLECTION-ABSORPTION SPECTROMETRY WITH METAL SUBSTRATES... 

In this section, polarization-modulation reflection-absorption spectrometry, a representative application of double-modulation spectrometry, is described. When polarization-modulation spectrometry is applied to reflection-absorption measurements for thin Aims on metal substrates, the polarization of the infrared beam incident on a thin film is alternately switched between being parallel and perpendicular to the plane of incidence, and... 

Surface analysis has made enormous contributions to the field of adhesion science. It enabled investigators to probe fundamental aspects of adhesion such as the composition of anodic oxides on metals, the surface composition of polymers that have been pretreated by etching, the nature of reactions occurring at the interface between a primer and a substrate or between a primer and an adhesive, and the orientation of molecules adsorbed onto substrates. Surface analysis has also enabled adhesion scientists to determine the mechanisms responsible for failure of adhesive bonds, especially after exposure to aggressive environments. The objective of this chapter is to review the principals of surface analysis techniques including attenuated total reflection (ATR) and reflection-absorption (RAIR) infrared spectroscopy. X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), and secondary ion mass spectrometry (SIMS) and to present examples of the application of each technique to important problems in adhesion science. 

The term 1 or h indicates low or high coverage of adsorbed ethene, as inferred from ethene exposures.h TPD, temperature-programmed desorption LITD, laser-induced thermal desorption 1 FT-MS, Fourier-transform mass spectrometry SIMS, secondary-ion mass spectrometry MS, mass spectrometry T-NEXAFS, transient near-edge X-ray absorption fine structure spectroscopy RAIRS, reflection-absorption infrared spectroscopy. d Data for perdeut-erio species.1 Estimated value. 

Due to the absorption bands in NIR being weaker than in UV-Vis absorption, NIR spectrometry is not as useful for quantitative measurements but offers better qualitative analysis because of improved selectivity. NIR techniques can handle both liquid and solid samples. Near infrared reflectance analysis (NIRA) has found wide application in process analysis, especially for highly absorbing compounds such as foodstuffs Coal, grain, pulp and paper products and some pharmaceuticals can also be determined by NIRA ". The reflectance from the sample is reported relative to reflectance from a standard reference surface. 

RAIS Reflection-Absorption Infrared Spectroscopy, 33 RBS Rutherford Backscattering Spectrometry, 36 REELS Reflection Electron Energy Loss Spectroscopy, 18, 34 REM Reflection Electron Microscopy ... 

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