http://www.cnr.it/ontology/cnr/individuo/prodotto/ID50887
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)
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- 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)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- 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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- Autore CNR
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