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ESR Studies of free radicals derived from hydroxyquinones;naphthazarin revisited-twenty-five years of the alternating linewidth effect.


Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
46 KB
Volume
153
Category
Article
ISSN
0009-2614

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โœฆ Synopsis


Detection of polymer thermal transitions by excimer fluorescence. Poly-N-vinylcarbazole, Chem. Phys. Letters 150 (1988) 159. In the list of references, references [ lo-14 ] should be [ 9-13 ] and reference [ 9 ] should be [ 141. K.A. Al-Hassan and T. Azumi, The red edge effect as a tool for investigating the origin of the anomalous fluorescence band of 9,9 '-bianthryl in rigid polar polymer matrices, Chem. Phys. Letters 150 (1988) 344. Pages 345 and 346 have been inadvertently interchanged: page 345 should be 346 and page 346 should be 345. *** B. Sarkar and K. Bhattacharyya, On the Pad4 method for sequence acceleration and calculation of Madelung constants, Chem. Phys. Letters 150 ( 1988) 419.


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ESR studies of free radicals derived fro
โœ Ibrahim M. Ahmed; Andrew Hudson; Angelo Alberti ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 189 KB

The neutral semiquinone radical obtained by photolysis of naphthazarin in THF exhibits linewidth alternation. The tempetature dependence of the ESR spectrum has been interpreted in terms of a restricted rotation of the hydroxyl groups with an activation energy of-22.7 kJ mol-'.