Zobrazeno 1 - 10
of 54
pro vyhledávání: '"S. Shenkov"'
Autor:
Sabi Varbanov, S. Shenkov, E. Tashev, Tania Tosheva, Ivan Dukov, Victoria Lachkova, Maria Atanassova, Nikolay Vassilev
Publikováno v:
Polyhedron. 134:135-142
A new lower rim phosphorus-containing calix[6]arene with six dimethyl-methylene phosphine oxide groups, namely 5,11,17,23,29,35-hexa(1,1,3,3-tetramethyl-butyl)-37,38,39,40,41,42-hexakis-(dimethylphosphinoylmethyleneoxy)-calix[6]arene (S), has been sy
Autor:
Tania Tosheva, Sabi Varbanov, Eduardo García-Villafaña, Flor de María Ramírez, E. Tashev, S. Shenkov
Publikováno v:
Polyhedron. 56:123-133
A new functionalised calixarene, para-tert-octylcalix[4]arene, fitted with phosphinoyl pendant arms (B4boctL4) 1, was synthesised and fully characterised. The procedure using xylene via a Williamson reaction between the tetra sodium derivative of the
Autor:
Tania Tosheva, Sabi Varbanov, S. Shenkov, Maria Atanassova, Anne-Sophie Chauvin, E. Tashev, Ivan Dukov
Publikováno v:
Separation and Purification Technology. 64:170-175
A new lower rim substituted calix[8]arene bearing eight phosphine oxide moieties has been synthesized. The structure of 5,11,17,23,29,35,41,47-octa(1,1,3,3-tetramethylbutyl)-49,50,51,52,53,54,55,56-octakis(dimethylphosphinoylmethyleneoxy)calix[8]aren
Autor:
Tania Tosheva, Rosica Petrova, Rosario Scopelliti, E. Tashev, Sabi Varbanov, Victoria Lachkova, S. Shenkov, Anne-Sophie Chauvin
Publikováno v:
Supramolecular Chemistry. 19:447-457
The synthesis and characterization of several new phosphorus-containing partially lower rim substituted derivatives of 5,11,17,23-tetra(t-butyl) calix(4)arene (1) and 5,11,17,23-tetra(t-octyl)calix(4)arene (II), namely 5,11,17,23-tetra(t-butyl)-25,27
Autor:
V. Yu. Baranovskii, A. M. Wasserman, M. V. Motyakin, I. I. Aliev, Nikolay Lambov, L. L. Yasina, Milen Dimitrov, S. Shenkov
Publikováno v:
Polymer Science Series A. 48:1304-1309
Partially water-swellable polymer networks were synthesized on the basis of poly(acrylic acid) and various macrodiisocyanates. Hydrophilic and hydrophobic local regions were revealed in swollen networks (hydrogels) by means of the spin probe techniqu
Autor:
Sabi Varbanov, Vladimira Videva, Rosica Petrova, E. Tashev, Anne-Sophie Chauvin, Tania Tosheva, Mariana Mitewa, Rosario Scopelliti, S. Shenkov
Publikováno v:
Polyhedron. 25:2261-2268
A new modified calix[4]arene, namely 5,11,17,23-tetra-tert-butyl-25,27-dihydroxy-26,28-bis[(tetramethyldiamidophosphinyl)oxy]calix[4]arene (L) has been prepared by reacting the parent calixarene with tetramethyldiamidophosphoric acid chloride, and it
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 179:1757-1767
A series of thirteen new carbamoyl and thiocarbamoyl derivatives of N-benzyl-aminomethyl-dimethyl-phosphine oxide have been synthesized and characterized. The compounds were prepared via interaction of N-benzyl-aminomethyl-dimethyl-phosphine oxide wi
Publikováno v:
Polymer. 38:1339-1344
The complex formation between polymethacrylic acid (PMAA) and the copolymers of adipic acid (AdA) with poly(ethylene glycol) (PEG) in dilute solution has been studied. The hydrophobic AdA fragments break the continuous cooperative hydrogen bonds betw
Autor:
Tania Tosheva, Ivan Iliev, A. Georgieva, Ivelin Vladov, Ivelina Tsacheva, I. Kraicheva, Ts. Gerasimova, M. Topashka-Ancheva, Koljo Troev, S. Shenkov, E. Tashev, Anton Kril, Elitsa Vodenicharova
Publikováno v:
Bioorganicmedicinal chemistry. 22(2)
Novel polyphosphoesters containing anthracene-derived aminophosphonate units, poly(oxyethylene aminophosphonate)s (4 and 5) and poly[oxyethylene(aminophosphonate-co-H-phosphonate)]s (6 and 7), were synthesized via an addition of poly(oxyethylene H-ph
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 34:2253-2258
Complex formation between polymethacrylic (PMAA) and polyacrylic acids, and star-shaped poly(ethylene glycol) prepared by ethoxylation of pyrogallol (Pyr-PEG) has been studied viscometrically and by potentiometric titration in water solution. The com