Photoemission properties of methyl-substituted guanines: photoelectron and fluorescence investigations of 1, 9-dimethylguanine, O6, 9-dimethylguanine, and 9- …

PR LeBreton, X Yang, S Urano, S Fetzer…

Index: LeBreton; Yang; Urano; Fetzer; Yu; Leonard; Kumar Journal of the American Chemical Society, 1990 , vol. 112, # 6 p. 2138 - 2147

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Citation Number: 61

Abstract

Abstract: Photoelectron and fluorescence emission properties of 1.9-dimethylguanine (1, 9- DMG), 06, 9-dimethylguanine (06, 9-DMG), and 9-methylguanine (9-MG) have been examined. Gas-phase He1 photoelectron spectra have been compared with theoretical ionization potentials provided by HAM/3 semiempirical quantum mechanical calculations, and by SCF ab initio calculations carried out with 3-21G and 4-31G basis sets. Geometries ...