Matrix Isolation Spectroscopy: Technique and Applications

摘要: The technique of matrix isolation involves condensing the substance to be studied with a large excess inert gas (usually argon or nitrogen) at low temperature form rigid solid (the matrix). early development spectroscopy was directed primarily study unstable molecules and free radicals. ability stabilise reactive species by trapping them in cage, thus inhibiting intermolecular interaction, is an important feature isolation. temperatures (typically 4-20K) also prevent occurrence any process activation energy more than few kJ mol-1. Apart from stabilisation species, affords number advantages over conventional spectroscopic techniques. monomelic solute environment reduces interactions, resulting sharpening absorption compared other condensed phases. effect is, course, particularly dramatic for substances that engage hydrogen bonding. Although developed inhibit it has proved great value studying these interactions molecular complexes formed matrices higher concentrations those required true