0420868 - ÚMCH 2014 RIV DE eng J - Článek v odborném periodiku
Omelchenko, Olga - Tomšík, Elena - Zhigunov, Alexander - Guskova, O. - Gribkova, O. - Gospodinova, NataliaJ-like supramolecular assemblies of polyaniline in water.
Macromolecular Chemistry and Physics. Roč. 214, č. 23 (2013), s. 2739-2743. ISSN 1022-1352. E-ISSN 1521-3935
Grant CEP: GA ČR(CZ) GA13-00270S
Institucionální podpora: RVO:61389013
Klíčová slova: conjugated polymers * J-aggregates * molecular dynamics
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 2.451, rok: 2013
The consideration of polyaniline (PANI) as a supramolecular assembly similar to J-aggregates of dyes is proposed. Fibrils with a length of more than 100 nm and a diameter of about 4 nm are formed in water during aniline polymerization, as shown by small-angle X-ray scattering. Long-wavelength absorption of the fibrils, red-shifted with respect to highly crystalline PANI film supports the idea about the formation of J-aggregates. Their formation, similar to dyes, is promoted by the addition of a sulfonated polyelectrolyte and becomes more pronounced with an increase of the molar mass of the polyelectrolyte. Self-organization of aniline oligomers in a polar environment is confirmed by atomistic molecular dynamics simulations.
Trvalý link: http://hdl.handle.net/11104/0227731
