Kazan (Volga region) Federal University, KFU
KAZAN
FEDERAL UNIVERSITY
 
BINDING OF 1,5-BIS(P-SULFONATOPHENYL)-3,7-DIPHENYL-1,5-DIAZA-3,7-DIPHOSPHACYCLOOCTANE WITH TETRAMETHYLVIOLOGEN CALIX[4]RESORCIN WITH A METHYL RADICAL IN THE RESORCINOL RING
Form of presentationArticles in international journals and collections
Year of publication2014
Языканглийский
  • Ziganshina Albina Yulduzovna, author
  • Bibliographic description in the original language A. Y. Ziganshina, G. R. Nasybullina, V. V. Yanilkin, N. V. Nastapova, D. E. Korshin, Yu. S. Spiridonova, R. R. Kashapov, M. Gruner, W. D. Habicher, A. A. Karasik, A. I. Konovalov / Binding of 1,5-bis(p-sulfonatophenyl)-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane with tetramethylviologen calix[4]resorcin with a methyl radical in the resorcinol ring // Rus. J. Electrochem. – 2014. – 50. – 142–153.
    Annotation The binding of the amphiphilic 1,5-bis(para-sulfonatophenyl)-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane dianion (APCO2−) with the octacation of the amphiphilic tetramethylviologen calix[4]resorcin having a methyl radical in the resorcinol ring (MVCA-C8+ 1) in 30% aqueous DMSO in a 0.1M NaCl supporting solution was studied by various methods. The dianion was bound at the upper rim of calixresorcin due to the donor-acceptor interactions between the viologen acceptor units and the nitrogen- and phosphorus-centered electron-donor fragments of APCO2− and at the lower rim due to hydrophobic interactions. The composition of the complex depended on the MVCA-C8+1: APCO2− ratio. The complexes aggregated, forming insoluble precipitates. MVCA-C 8+1-APCO2− is a system with reversibly electro-switchable aggregation. The starting MVCA- 8+1 octacation partially bound APCO2−, a certain quantity of both substrates remaining in a free state in solution. The MVCA-C 4+?1 tetraradical tetracation formed as a result of the reduction of MVCA-C 8+1 completely bound APCO2− due to hydrophobic interactions when the MVCA-C 8+1: APCO2− ratio was 1: 3. The reversible oxidation of MVCA-C 4+?1 to the starting MVCA-C 8+1 octacation brought the system back to its starting state
    Keywords calix[4]resorcin, methylviologen, amphiphilic cyclic diphosphine, complex, aggregation, electroswitchable aggregation
    The name of the journal RUSSIAN JOURNAL OF ELECTROCHEMISTRY
    URL https://link.springer.com/article/10.1134/S1023193513040150#citeas
    Please use this ID to quote from or refer to the card https://repository.kpfu.ru/eng/?p_id=262941&p_lang=2

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