140918-53-2Relevant articles and documents
Synthesis method of liquid crystal intermediate
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, (2021/10/27)
The invention discloses a synthetic method of a liquid crystal intermediate, which comprises the following operations: preparing compound B1, hydrolyzing compound B1 to prepare compound B2. The compounds B2 and 3, 4 - dihydro - 2H - pyran were reacted wit
Pendant triazole ring assisted mesogen containing side chain liquid crystalline polymethacrylates: Synthesis and characterization
Palani,Saravanan,Kannan
scheme or table, p. 81 - 89 (2012/02/01)
Two series of click chemistry assisted alkoxymethyl-1H-[1,2,3]-triazol-1-yl containing sidechain liquid-crystalline polymethacrylates were synthesized by free radical polymerization technique. Mesogen was linked to backbone through various spacer units. Monomers and polymers were characterized by FT-IR, 1H and 13C-NMR spectral techniques. Thermal stability of polymers was confirmed by thermogravimetric analysis. Mesomorphic property and phase transition temperature of polymers were analysed by differential scanning calorimetry and polarized optical microscopy. Phase transition temperature and mesomorphic property of polymers with respect to insertion of polar alkoxy group on terminal triazole ring and spacer length between backbone and mesogen were investigated. Polymers exhibited grainy like textures under polarized optical microscopy. Spacer length between mesogen and backbone alters phase transition temperature of the polymers. Indian Academy of Sciences.
Synthesis and Characterization of a Series of Liquid Crystal Monomers Containing a Novel Spacer Group Based on Vinylacetic Acid
Jacobs, Howard A.,Day, Gary M.,Jackson, W. Roy,Simon, George P.,Watson, Keith G.,Zheng, S.
, p. 695 - 702 (2007/10/02)
A series of liquid crystal monomers with side chains involving a vinylacetic acid unit have been prepared, and their thermal and optical properties compared with those of related compounds containing the same mesogenic unit but a conventional polymethylene spacer group based on a terminal alkene.