Synthesis and Characterisation of Pi-Conjugated Polymer / Silica Hybrids Containing Regioregular Ionic Polythiophenes

Sébastien Clément (1) , Tizit Akim (1) , Simon Desbief (2) , Ahmad Mehdi (1) , Julien de Winter (3) , Pascal Gerbaux (3) , Roberto Lazzaroni (2) , Bruno Boury (1, 4)

1 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 Laboratory for Chemistry of Novel Materials
3 Laboratoire de Chimie Organique
4 CMOS - Chimie moléculaire et organisation du solide

High-regioregular poly{3-[n-(1-methylimidazolium-3-yl)alkyl]thiophene-2,5-diyl bromide} (n = 4, 6, 8) (10-12) have been prepared by reaction of poly[3-(n-bromoalkyl)thiophene-2,5-diyl] (n = 4, 6, 8) (7-9) with 1-methylimidazole. Acid-catalyzed hydrolysis and polycondensation of tetraethoxysilane (TEOS) were carried out in the presence of these polymers. The strong ionic interactions between the imidazolium moieties of the polythiophene and the charged silanol groups enabled the homogeneous dispersion of the polythiophene within silica. The resulting composite materials were characterised by SEM, TEM and tapping mode atomic force microscopy (TM-AFM). The optical and thermal properties were investigated by UV and TGA measurements

Domaines: Matériaux; Polymères

Sébastien Clément, Tizit Akim, Simon Desbief, Ahmad Mehdi, Julien de Winter, et al.. Synthesis and Characterisation of Pi-Conjugated Polymer / Silica Hybrids Containing Regioregular Ionic Polythiophenes. Journal of Materials Chemistry, 2011, 21 (8), pp.2733-2739. ⟨10.1039/C0JM03598J⟩. ⟨hal-00564445⟩