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Preparation and Spectral Characterization of Novel Species in Matrices
Author(s) -
Lee YuanPern
Publication year - 2005
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200500091
Subject(s) - chemistry , photodissociation , matrix isolation , molecule , matrix (chemical analysis) , characterization (materials science) , excited state , photochemistry , chemical physics , nanotechnology , atomic physics , organic chemistry , materials science , physics , chromatography
Abstract A review of matrix‐isolation experiments performed in this laboratory for the past thirteen years (1992–2004) is given; the work emphasizes the preparation and spectral characterization of novel species of atmospheric interest, and the significance of detection of some species is discussed. A previous review ( J. Chin. Chem. Soc . 1992 , 39 , 503) covers work from 1981 to 1991. Various methods for production of novel species, including reaction in the gaseous phase, laser photolysis of a single precursor in situ , reaction of a molecule with an atom or radical in a matrix cage and reaction of a molecule with an electronically excited molecule, are discussed. The effect of secondary photolysis on products is illustrated with formation of various conformers of HOONO from photolysis of HNO 3 . The advantage of investigating electronic transitions that are difficult to observe in the gaseous phase and the mode and site selectivity of photodissociation for species in a matrix cage are also discussed. New developments involving use of p ‐H 2 as a matrix host, including the introduction of a pulse‐deposition method for use at ˜5 K and the exploration of internal rotation of larger molecules in solid p ‐H 2 , are also presented.