64046-90-8Relevant articles and documents
Covalent Immobilization of (?)-Riboflavin on Polymer Functionalized Silica Particles: Application in the Photocatalytic E→Z Isomerization of Polarized Alkenes
Metternich, Jan B.,Sagebiel, Sven,Lückener, Anne,Lamping, Sebastian,Ravoo, Bart Jan,Gilmour, Ryan
supporting information, p. 4228 - 4233 (2018/03/21)
The covalent immobilization of the biomimetic, photo-organocatalyst (?)-riboflavin on silica micro- and nanoparticles via atom transfer radical polymerization (ATRP) is disclosed. Given the effectiveness of (?)-riboflavin as a versatile, environmentally benign photocatalyst, an immobilization strategy based on acrylate-linker modification of the catalyst core and controlled polymerization on initiator pre-functionalized silica particles has been developed. Validation of this approach is demonstrated in the E→Z isomerization of a benchmark cinnamonitrile (Z/E up to 88:12) with 0.97 mol % catalyst loading. Characterization of the immobilized photocatalyst supports covalent embedding of the catalyst in the polymeric brushes on the silica particle surface.
POLYMERIZABLE LIQUID CRYSTAL COMPOUND, POLYMERIZABLE LIQUID CRYSTAL COMPOSITION, AND ALIGNMENT FILM
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Page/Page column 28, (2009/06/27)
Disclosed is a polymerizable liquid crystal compound represented by the formula [1] below, which enables to obtain a polymer having excellent optical anisotropy, excellent chemical resistance and excellent heat resistance, wherein retardation value and transparency are stably maintained even at high temperatures. (In the formula, R represents an organic group represented by the formula [A-1], [B-1], [B-2] or [C-1] below; and n represents an integer of 2 to 9.) (In the formula, X represents a hydrogen atom, a halogen atom, a cyano group or an alkoxy group; m represents an integer of 2 to 10; and p represents an integer of 0 to 6.)