Showing papers on "Infrared spectroscopy correlation table published in 1988"
TL;DR: The theoretical and experimental foundation of surface IR spectroscopy is described and selected examples are presented to illustrate the kind of information derived in several important areas of surface science such as chemistry, structure, dynamics and kinetics at surfaces as discussed by the authors.
760 citations
344 citations
60 citations
TL;DR: Two-dimensional IR spectroscopy is used to study atactic polystyrene as mentioned in this paper, which is a technique based on time-resolved detection of IR signals in response to an external perturbation, such as mechanical strain.
Abstract: Two-dimensional infrared (2D IR) spectroscopy is used to study atactic polystyrene. 2D IR is a technique based on time-resolved detection of IR signals in response to an external perturbation, such as mechanical strain. Since different chemical functional groups respond to the applied perturbation at unique and often different rates, characteristic time-dependent variations of the IR-band intensities are observed. Correlation analysis of the dynamic variation of the IR signals yields a new spectrum defined by two independent wave numbers. Peaks located on a 2D IR spectral plane imply interactions and connectivities among chemical functional groups. By spreading convoluted IR bands over two dimensions, the spectral resolution is also greatly enhanced.
35 citations
TL;DR: In this article, the high-resolution vibration-rotation spectra of stable and unstable molecular species have been studied at low rotational and vibrational temperatures in a pulsed supersonic free jet.
Abstract: High-resolution vibration–rotation spectra of stable and unstable molecular species have been studied at low rotational and vibrational temperatures. Infrared absorption in a pulsed supersonic free jet has been measured by a frequency-tunable diode laser in a single- or multi-pass configuration. The modulated infrared absorption is detected by a lock-in amplifier or a two-channel boxcar integrator. The ν3 band of SiCl4 at 624 cm–1 is studied as one of the series of work on heavy non-polar inorganic compounds. Five spectroscopic constants are determined accurately for the ν3 band of 28Si35Cl4. Weakly bound molecular complexes are studied in the middle infrared region as unstable molecular species. Well resolved ro-vibrational spectra are observed in (N2O)2, C2H2·Ar, (C2H2)2, (C2H2)3, BF3·X (X = Ne, Ar, Kr), C6H6·X (X = Ar, Kr), and (NO)2 with Doppler-limited resolution. Infrared–microwave double resonance in a free jet is discussed for microwave spectroscopy of van der Waals complexes in vibrationally excited states.
27 citations
TL;DR: In this article, the impact of dilute Ar/NH3 samples during condensation at 12 K produced six new infrared bands: 3552, 3217, 3152, 3133, 1523, and 1496 cm−1.
Abstract: Electron impact of dilute Ar/NH3 samples during condensation at 12 K produced six new infrared bands: 3552, 3217, 3152, 3133, 1523, and 1496 cm−1. The 3552 cm−1 band has been assigned to OH−, the 3133 cm−1 band to NH, and the 3217 and 1496 cm−1 bands to NH2 radical by earlier workers. The 3152 and 1523 cm−1 bands exhibit proper 15N shifts to be assigned to the NH−2 anion isolated in solid argon.
15 citations
TL;DR: Fourier transform reflection-absorption infrared spectroscopy (FT-RAIRS) is shown to have great potential for the study of surface reaction dynamics on timescales of the order 10 −2 − 10 s.
14 citations
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TL;DR: Advantages and limitations of CO laser time-resolved infrared absorption spectroscopy in the study of coordinatively unsaturated metal carbonyl fragments in the gas phase are discussed in this paper.
5 citations
24 Aug 1988
TL;DR: In this article, atmospheric emission and absorption infrared spectra obtained with several of the University of Denver's balloon-borne and ground-based spectrometers are presqnted.
Abstract: Atmospheric emission and absorption infrared spectra obtained with several of the University of Denver's balloon-borne and ground-based spectrometers are presqnted. The spectra cover intervals of the 3-25 micron region with resolution ranging from 0.5 to 0.0005 cm-1. Analysis of these spectra provides a powerful tool for the identification and quantification of atmospheric trace gases, and for updating spectroscopic parameters needed for modeling atmospheric radiation.
TL;DR: In this paper, the spectral changes of lithographic printing plates were measured in situ by PAS and RAS and the advantages of PAS over RAS were discussed for the spectral measurements of organic coatings on roughened metal surface.
Abstract: Infrared spectral changes of lithographic printing plates were measuredin-situ by PAS and RAS. The advantages of PAS over RAS were discussed for the spectral measurements of organic coatings on roughened metal surface.