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Titolo:
Comb-shaped supramolecules of emeraldine base form of polyaniline due to coordination with zinc dodecyl benzenesulfonate and their plasticized self-organized structures
Autore:
Ruokolainen, J; Eerikainen, H; Torkkeli, M; Serimaa, R; Jussila, M; Ikkala, O;
Indirizzi:
Helsinki Univ Technol, Dept Engn Math & Phys, FIN-02015 Espoo, Finland Helsinki Univ Technol Espoo Finland FIN-02015 , FIN-02015 Espoo, Finland Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00014 ys, FIN-00014 Helsinki, Finland PANIPOL Ltd, FIN-06101 Porvoo, Finland PANIPOL Ltd Porvoo Finland FIN-06101 IPOL Ltd, FIN-06101 Porvoo, Finland Univ Helsinki, Inst Biotechnol, FIN-00014 Helsinki, Finland Univ HelsinkiHelsinki Finland FIN-00014 ol, FIN-00014 Helsinki, Finland
Titolo Testata:
MACROMOLECULES
fascicolo: 25, volume: 33, anno: 2000,
pagine: 9272 - 9276
SICI:
0024-9297(200012)33:25<9272:CSOEBF>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRONIC-PROPERTIES; SURFACTANT COMPLEXES; MESOMORPHIC STATE; DOPED POLYANILINE; POLYMERS; SYSTEMS; CONDUCTIVITY; SULFONATE; SPECTRA; PHASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Ikkala, O Helsinki Univ Technol, Dept Engn Math & Phys, POB 2200, FIN-02015 Espoo, Finland Helsinki Univ Technol POB 2200 Espoo Finland FIN-02015 Finland
Citazione:
J. Ruokolainen et al., "Comb-shaped supramolecules of emeraldine base form of polyaniline due to coordination with zinc dodecyl benzenesulfonate and their plasticized self-organized structures", MACROMOLEC, 33(25), 2000, pp. 9272-9276

Abstract

We show that the emeraldine base form of polyaniline (PANI) forms self-organized (mesomorphic) structures upon mixing with an amphiphilic oligomer zinc dodecyl benzenesulfonate, Zn-(DBS)(2) The number of Zn(DBS)(2) moleculesvs the number of PhN repeat units of PANI was selected to be x = 0, 0.125,0.25, 0.5, and 1.0, and the mixtures were denoted as PANI[Zn(DBS)(2)](x) according to their nominal compositions. PANI consists of alternating quinone diimine and benzene diamine groups. FT-IR and UV-vis spectroscopies reveal changes in the quinone diimine moieties upon adding Zn(DBS)(2), thus suggesting coordination to the iminic nitrogens to form comb-shaped supramolecules PANI[Zn-(DBS)(2)](0.5). Their structure formation was studied using small-angle X-ray scattering and electron microscopy. The competition between the attraction (coordination) and repulsion (dodecyl tails) leads to a self-organized lamellar phase with a long period of ca. 31 Angstrom. Further increase of Zn(DBS)(2) did not reveal clear changes in FT-IR and UV-vis but results in plasticization to render viscous fluid upon heating for x = 1.0, in contrast to the uncomplexed PANI which is infusible.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 10:29:05