Lin, Xueyan published the artcileImine-Based Reactive Mesogen and Its Corresponding Exchangeable Liquid Crystal Elastomer, Formula: C17H28O8S4, the main research area is imine reactive mesogen corresponding exchangeable liquid crystal elastomer.
To date, exchangeable liquid crystalline elastomers (xLCEs) are mainly fabricated by combining conventional LCEs with addnl. exchangeable functional groups in their networks. While conventional LCEs are frequently made from com. available aromatic-ester reacting mesogens, or from mesogens based on biphenyl core, such reacting monomers are not optimized to fabricating xLCEs whose bond-exchange reaction is fast and clean-cut. Here, we develop a fast synthesis route to produce a new type of reactive mesogen based on an aromatic-imine structure that intrinsically enables a fast and stable bond-exchange reaction in the resulting imine-based xLCE. This new xLCE displays vitrimer plastic-flow behavior and its bond-exchange activation energy is calculated to be 54 kJ/mol. We also demonstrate that this xLCE is thermally stable, to withstand many recycling cycles without visible decay, and its liquid crystallinity is preserved. Finally, we demonstrate the reprogramming and realignment of mesogen orientation in this xLCE, with the realigned xLCE capable of reversible thermal actuation.
Macromolecules (Washington, DC, United States) published new progress about Activation energy. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Formula: C17H28O8S4.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts