NDLI: Synthesis and characterization of liquid-crystalline silsesquioxanes

Content Provider	Springer Nature Link
Author	Kim, Kyung Min Chujo, Yoshiki
Copyright Year	2001
Abstract	Liquid-crystalline (LQ) silsesquioxanes having various mesogenic moieties were synthesized by hydrosilylation reaction of octa(hydridosilsesquioxane) and terminal alkenes with mesogenic groups using hexachloroplatinic acid as a catalyst. The obtained LC silsesquioxanes were characterized by FT-IR, 1H- , 29Si NMR. From the results of differential scanning calorimetry (DSC) and optical polarizing microscopy, their liquid crystallinities of nematic phase were found to be much more stable than those of the corresponding mesogenic compounds due to the effect of the inorganic part which is polyhedral hydridosiloxane core. It was also found that the thermal stabilities of LC silsesquioxanes were improved after hydrosilylation reaction through a thermogravimetric analysis (TGA).
Starting Page	15
Ending Page	21
Page Count	7
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	46
Issue Number	1
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-02-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

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Synthesis and characterization of liquid-crystalline silsesquioxanes