Polythiophene-based conjugated polyelectrolyte: Optical properties and association behavior in solution

0443715 - ÚMCH 2016 RIV CH eng J - Článek v odborném periodiku
Urbánek, P. - di Martino, A. - Gladyš, S. - Kuřitka, I. - Minařík, A. - Pavlova, Ewa - Bondarev, D.
Polythiophene-based conjugated polyelectrolyte: Optical properties and association behavior in solution.
Synthetic Metals. Roč. 202, April (2015), s. 16-24. ISSN 0379-6779. E-ISSN 0379-6779
Grant CEP: GA TA ČR(CZ) TE01020118; GA ČR GAP108/12/1143
Institucionální podpora: RVO:61389013
Klíčová slova: polyelectrolyte * conjugated polymer * UV–vis spectroscopy
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 2.299, rok: 2015

Conjugated polyelectrolyte with polythiophene main chain and imidazolium side groups, poly{3-[6-(1-methylimidazolium-3-yl) hexyl]thiophene-2,5-diyl bromide}, is investigated. Polymer architecture with hydrophobic main chain and hydrophilic side groups is responsible for the inconvenient behavior of the polymer in solution. Absorption and emission characteristics and supramolecular assembling are investigated by spectroscopic, microscopic and light-scattering methods. We report significant solvatochromism which is observable by a naked eye. Water solutions and mixed solvent systems exhibit most interesting features: supramolecular assembling was investigated by DLS, AFM and TEM techniques and common spectroscopic methods such as UV–vis and fluorescence spectroscopy. Moreover, slow relaxation processes take part in water as it is evidenced by time evolution of absorption spectra. It is a result of vanishing of inter- and intramolecular interactions. These interactions are responsible for extraordinary solution behavior of the ionic polythiophene.
Trvalý link: http://hdl.handle.net/11104/0246414