On June 15, 2011, Sukchol, Kulthida; Thongyai, Supakanok; Praserthdam, Piyasan published an article.HPLC of Formula: 14602-86-9 The title of the article was Preparation and characterization of novel polyimide with chiral side chain for twist nematic liquid crystal display. And the article contained the following:
The synthesis of novel polyimide (PI) films containing chirals in side chain was investigated for utilizing in twist nematic (TN) liquid crystal display (LCD). The polyimide with amine side groups (PI4 a.m.) was prepared by two steps copolymerization of 4,4′-hexafluoroisopropylidene diphthalic anhydride (6FDA), 4,4′-oxydianiline (ODA), and 3,3′-diaminobezidine (4AM) in N-methyl-2- pyrrolidinone (NMP). In the first step, the oligomer of 6FDA-ODA with mole ratio 4:3 was synthesized. In the second step, the oligomer was reacted with 4AM by gradually dropping the oligomer into 4AM solution with the mole ratio 4:5 to obtain amino groups containing polyimide P14AM. By reacting chiral compounds, mandelic acid, menthyl chloroformate, and menthyl glyoxylate hydrate using condensation reaction with amine groups along polyimide mols., the novel polyimides can be synthesized. Their chem. structures were confirmed by Fourier transform IR spectroscopy and NMR spectroscopy (1H-NMR). The coated glass slides pairs were coated with PI4AM and with each polyimide/chiral. The liquid crystals (LCs) were inserted between two coated glass slides at above the nematic temperature under the polarized light microscope to observe the alignment of LCs. The results showed the alignment of LCs in some certain direction under polyimide/chiral pair, regardless of the type of the chiral mol. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011. The experimental process involved the reaction of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl carbonochloridate(cas: 14602-86-9).HPLC of Formula: 14602-86-9
The Article related to polyimide chiral side chain alignment liquid crystal display, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Other and other aspects.HPLC of Formula: 14602-86-9
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