Explosives detection: a challenge for physical chemistry
Article Abstract:
Detection of explosives and energetic materials and associated compounds for security screening, finding mines, detecting unexploded ordnance and pollution monitoring is an active research area in chemistry. A variety of detection methods and a wider range of physical chemistry challenges are in this area. Techniques such as mass spectrometry and optical spectrometry and chromatography for detecting trace amounts of explosives with short response times are of much interest, as are methods for detecting fragments coming from decomposition of the materials. Some molecular data for explosive compounds have been assembled. This research relates to various assaults that used explosive devices against civilian targets around the world and in the US in the 1990s.
Publication Name: Annual Review of Physical Chemistry
Subject: Chemistry
ISSN: 0066-426X
Year: 1998
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Optical studies of single molecules at room temperature
Article Abstract:
New developments in optical studies of single molecules at room temperature have been assembled with concentration on underlying principles and the potential of single-molecule experiments. Single-molecule-studies examples include those that involve photochemistry and photophysics experiments related to spectral fluctuations, single-molecule measurements, Raman spectroscopy, conformational dynamics, diffusional motions, fluorescence resonant energy transfer, enzymatic turnovers and exciton dynamics. These studies are an illustration of the information that can be obtained with the single-molecule approach not easily seen in ensemble-averaged measurements.
Publication Name: Annual Review of Physical Chemistry
Subject: Chemistry
ISSN: 0066-426X
Year: 1998
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High resolution spectroscopy in the gas phase: even large molecules have well-defined shapes
Article Abstract:
Recent high-resolution microwave, optical and infrared spectroscopy experiments show progress has been made from 1978-1998 in establishing equilibrium geometries in the gas phase of large polyatomic molecules and of their clusters. There has been progress in finding out how the geometries change when a photon is absorbed. Dynamical information that can be obtained from such studies, especially studies of electronically excited states, is of particular interest.
Publication Name: Annual Review of Physical Chemistry
Subject: Chemistry
ISSN: 0066-426X
Year: 1998
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