Synthesis and properties of cationic polyelectrolyte with regioregular polyalkylthiophene backbone and ionic-liquid like side groups

0345579 - ÚMCH 2011 RIV US eng J - Článek v odborném periodiku
Bondarev, D. - Zedník, J. - Šloufová, I. - Sharf, Ahmed - Procházka, M. - Pfleger, Jiří - Vohlídal, J.
Synthesis and properties of cationic polyelectrolyte with regioregular polyalkylthiophene backbone and ionic-liquid like side groups.
Journal of Polymer Science. Part A - Polymer Chemistry. Roč. 48, č. 14 (2010), s. 3073-3081. ISSN 0887-624X. E-ISSN 1099-0518
Grant CEP: GA AV ČR KAN100500652
Výzkumný záměr: CEZ:AV0Z40500505
Klíčová slova: conjugated polymers * ionic polythiophene * optical properties
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 3.894, rok: 2010

High-regioregular poly{3-[6-(1-methylimidazolium-3-yl)hexyl]thiophene-2,5-diyl bromide}, PMHT-Br, has been prepared by reaction of high-regioregular (above 92%) poly[3-(6-bromohexyl)thiophene-2,5-diyl] with 1-methylimidazole. PMHT-Br is soluble in water and water miscible solvents such as methanol, DMSO and shows solvatochromism; lambda(max) (nm): 423 (H2O); 435 (MeOH); 452 (DMSO). Increased absorption band broadening observed for aqueous solution as well as NMR spectra in 020 suggests a micelle-like structure of PMHT-Br molecules in these solutions: poly(3-hexylthiophene) core and 1-methylimidazolium bromide shell. Despite the disturbing effect of ionic groups, the solid-state PMHT-Br shows absorption maximum at 520 nm, the band edge at 660 nm (ca. 1.9 eV), and fluorescence emission with maximum at 635 nm, in a good agreement with the polymer regioregularity.
Trvalý link: http://hdl.handle.net/11104/0005952