Synthesis and thermotropic behavior of side chain polysiloxane bearing triphenylene moiety
T. Makowski, T. Ganicz, W. Zajaczkowski, W. Pisula, W. A. Stanczyk, A. Tracz
Vol. 9., No.7., Pages 636-646, 2015
DOI: 10.3144/expresspolymlett.2015.59
DOI: 10.3144/expresspolymlett.2015.59
Corresponding author: T. Makowski 
GRAPHICAL ABSTRACT
ABSTRACT
Side chain discotic polysiloxane with 2,3,6,7-tetrakis(hexyloxy)-10-methoxytriphenylene-11-undecanoate moieties is synthesized by hydrosilylation reaction. The phase behavior and thermooptical properties of the polysiloxane and the side chain precursor 2,3,6,7-tetrakis(hexyloxy)-10-methoxytriphenylene-11-undecanoate are examined by polarizing optical microscopy, thermooptical analysis, differential scanning calorimetry and wide angle X-ray scattering studies. A columnar planar alignment of LC in the layers has been determined. The pronounced alignment makes this polymer a promising material for application in optoelectronic devices. The differences in phase transitions and morphology between the triphenylene precursor and the discotic polysiloxane are discussed.
