Synthesis and self-assembly behaviours of side-chain smectic thiol–ene polymers based on the polysiloxane backbone

Abstract

A series of novel chiral polysiloxane side chain liquid crystal polymers (PSCLCPs) with two different types of LC phases and three self-assembly arrangements were successfully synthesized via thiol–ene click chemistry.

A series of novel side chain liquid crystalline polysiloxanes containing cyano‐ and cholesterol‐terminated substituents: Where will the structure‐dependence of terminal behavior of the side chain reappear?

“…The experimental details of M1 synthesis are in accordance with the literature . FT‐IR (KBr, cm −1 ): 2946–2884 (CH 3 , CH 2 , H 2 C, and CH), 1712 (CO), 1648 (CC), 1606, 1580, 1509, 1464 (Ar), 1274, 1249 (COC).…”

“…The synthetic routes of all the polymers were similar to those reported in the literature with minor modification . Taking the preparation of polymer P‐3 as a typical procedure.…”

“…1 H‐NMR spectra, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), polarized optical microscope (POM), one‐dimensional wide‐angle X‐ray diffraction (1D‐WAXD), small angle X‐ray scattering (SAXS), and two‐dimensional wide‐angle X‐ray diffraction (2D‐WAXD) were carried out according to the procedures as described previously …”

“…In our previous work, we have synthesized and characterized a series of PSCLCPs based on poly‐[3‐mercaptopropylmethylsiloxane] (PMMS) backbone with cholesterol‐terminated chiral side chains and methoxy‐terminated achiral side chains (PMMSs‐OCH 3 ‐based polymers). By virtue of the long polysiloxane skeleton and spacer as well as the synergy between them, smectic E (SmE), which is a high ordered liquid crystalline (LC) phase, was self‐assembled at low temperatures for polymers with the molar concentration of chiral cholesteric unit ( X chol ) below 0.3.…”

Side-Chain Liquid Crystal Co-Polymers for Angular Photochromic Anti-Counterfeiting Powder and Fiber

“…The polymers were obtained via a radical-initiated thiol-ene addition polymerization of cholesteric and nematic liquid crystalline monomers in different ratios; the details of the synthetic route of the monomers and polymers can be found in our previous work [25,26]. Tetrahydrofuran (THF, Beijing Chemical Works, Beijing, China) was refluxed over sodium and distilled.…”