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izvor podataka: crosbi

Aromatic side-chain liquid-crystalline polyurethanes with azobenzene mesogenic units (CROSBI ID 228338)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Brecl, Marko ; Ambrožić, Gabriela ; Žigon, Majda Aromatic side-chain liquid-crystalline polyurethanes with azobenzene mesogenic units // Polymer bulletin, 48 (2002), 2; 151-158. doi: 10.1007/s00289-002-0027-x

Podaci o odgovornosti

Brecl, Marko ; Ambrožić, Gabriela ; Žigon, Majda

engleski

Aromatic side-chain liquid-crystalline polyurethanes with azobenzene mesogenic units

We have synthesized SC-LCPUs from 1, 1'-methylenebis(4-isocyanatobenzene) (MDI) and azobenzene mesogenic diols (alpha-[bis(2-hydroxyethyl)amino]-omega-(4-R-azobenzene-4'-oxy)alkanes, R = -OCH3, -CN and -NO2) with 4, 8 or 12 methylene spacer units. All the C4RMDIP are amorphous polymers showing no mesomorphic properties, whereas for C8RMDIP polyurethanes only C8OMeMDIP is liquid-crystalline. The smectic structures of C12RMDIP polymers are defined by the terminal group ; the layer spacing values give the order CN>NO2>OMe.

liquid-crystals ; polymer ; polyurethane ; synthesis

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Podaci o izdanju

48 (2)

2002.

151-158

objavljeno

0170-0839

10.1007/s00289-002-0027-x

Povezanost rada

Kemija

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