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-'.
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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โฆ 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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