caa a22 4500 475761979 CHVBK 20180406123554.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1007/BF02494676 doi (NATIONALLICENCE)springer-10.1007/BF02494676 Formation of color centers and paramagnetic species by alkaline hydrolysis of polydiphenylenesulfophthalide [Elektronische Daten] [N. Shishlov, V. Khrustaleva, Sh. Akhmetzyanov, K. Murinov, N. Asfandiarov, A. Lachinov] Blue color centers (CC) (an intense absorption band (AB) at 566 nm and a weaker AB at 350 nm) and paramagnetic species (PMS) that give an ESR singlet withg=2.0028 and δH=10 Oe are formed by the treatment of a DMSO solution of polydiphenylenesulfophthalide with an excess of LiOH. The formation of blue CC is accompanied by a decrease in the intensity of the absorption band of the phenyl groups of the polymer at 270 nm. The blue CC were attributed to quinoid structures like the Chichibabin hydrocarbon. The long-wave absorption at 650-800 nm was assigned to the regions of quinoid-benzoid conjugation. The color centers and PMS were also observed when the polymer was hydrolyzed in cyclohexanone; however, in this case, the reaction was accompanied by polymer aggregation. The electronic spectrum of the Chichibabin hydrocarbon was calculated by the PM3 method. The identity of CC formed by alkaline hydrolysis and appearing in the polymer—aniline—cyclohexanone system was shown. The absence of "quinoid” CC for polyterphenyl sulfophthalide was explained by the energetically unfavorable singlet state for structures similar to the Müller hydrocarbon. Kluwer Academic/Plenum Publishers, 2000 polyarylenesulfophthalides nationallicence alkaline hydrolysis nationallicence triarylmethyl radicals nationallicence the Chichibabin hydrocarbon nationallicence the Müller hydrocarbon nationallicence electronic spectra nationallicence ESR spectra nationallicence Shishlov N. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut Khrustaleva V. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut Akhmetzyanov Sh Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut Murinov K. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut Asfandiarov N. Institute of Molecular and Crystalline Physics, Ufa Research Center for the Russian Academy of Sciences, 151 prosp. Oktyabrya, 450075, Ufa, Russian Federation aut Lachinov A. Institute of Molecular and Crystalline Physics, Ufa Research Center for the Russian Academy of Sciences, 151 prosp. Oktyabrya, 450075, Ufa, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/2(2000-02-01), 298-302 1066-5285 49:2<298 2000 49 11172 https://doi.org/10.1007/BF02494676 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02494676 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shishlov N. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut NATIONALLICENCE 700 1- Khrustaleva V. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut NATIONALLICENCE 700 1- Akhmetzyanov Sh Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut NATIONALLICENCE 700 1- Murinov K. Institute of Organic Chemistry, Ufa Research Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation aut NATIONALLICENCE 700 1- Asfandiarov N. Institute of Molecular and Crystalline Physics, Ufa Research Center for the Russian Academy of Sciences, 151 prosp. Oktyabrya, 450075, Ufa, Russian Federation aut NATIONALLICENCE 700 1- Lachinov A. Institute of Molecular and Crystalline Physics, Ufa Research Center for the Russian Academy of Sciences, 151 prosp. Oktyabrya, 450075, Ufa, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/2(2000-02-01), 298-302 1066-5285 49:2<298 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer