Synthesis and characterization of calix[4]arene-based copolyethers and polyurethanes. Ionophoric properties and extraction abilities towards metal cations of polymeric calix[4]arene urethanes (Articolo in rivista)

Type
Label
  • Synthesis and characterization of calix[4]arene-based copolyethers and polyurethanes. Ionophoric properties and extraction abilities towards metal cations of polymeric calix[4]arene urethanes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.polymer.2004.06.012 (literal)
Alternative label
  • aAlessandro Dondoni, aAlberto Marra, aMarcello Rossi and bMarco Scoponi (2004)
    Synthesis and characterization of calix[4]arene-based copolyethers and polyurethanes. Ionophoric properties and extraction abilities towards metal cations of polymeric calix[4]arene urethanes
    in Polymer (Guildford)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • aAlessandro Dondoni, aAlberto Marra, aMarcello Rossi and bMarco Scoponi (literal)
Pagina inizio
  • 6195 (literal)
Pagina fine
  • - (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 45 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Dipartimento di Chimica, Laboratorio di Chimica Organica, Universita` di Ferrara, Via Borsari 46, 44100 Ferrara, Italy b Istituto per la Sintesi Organica e la Fotoreattivita` del CNR (ISOF-CNR), sez. di Ferrara, c/o Dipartimento di Chimica, Universita` di Ferrara, Via Borsari 46, 44100 Ferrara, Italy (literal)
Titolo
  • Synthesis and characterization of calix[4]arene-based copolyethers and polyurethanes. Ionophoric properties and extraction abilities towards metal cations of polymeric calix[4]arene urethanes (literal)
Abstract
  • Copolyethers and polyurethanes containing lower and upper rim calix[4]arene units in the fixed cone conformation were prepared in good yield by polycondensation reactions of distal calix[4]arene diols with bisphenol-A/dibromomethane and 2,4-tolylendiisocyanate (TDI), respectively. In a similar way were prepared calix[4]arene-crown-5 and -crown-6 polyurethanes in the fixed 1,3-alternate conformation by condensation of TDI with lower rim calixcrown-5 and calixcrown-6 diols. However, the poor solubility in common organic solvents of the copolyether derivatives (M w ¼ 11; 100 - 11; 600 g/mol) hampered further studies on their ionophoric properties. Aiming to obtain model compounds for the investigation of both extraction abilities and ionophoric properties of the polyurethane materials, several bis-urethanes were also synthesized by reaction of the calix[4]arene diols with p-tolylisocyanate (TI). The extraction ability measurements of monomeric and polymeric calix[4]arene urethanes (M w ¼ 12,300 - 83,500 g/mol) towards alkali metal cations (Li þ ,Naþ ,K þ ,Rbþ ,Cs þ ) and Ag þ showed a remarkable efficiency and selectivity of calixcrown-6 polyurethane toward Rbþ ,Csþ and Agþ . (literal)
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