Synthesis and optical activity of isosorbide chiral derivative containing fluorocarbon group as chiral dopant in liquid crystal materials

Practical and Scalable Synthesis of Isosorbide Derivatives Containing an Active Amine Group

“…The peaks' type, number and shape are in accordance with compound 9. In the 13 C NMR spectrum, there were 11 peaks, which is consistent with the structure of compound 9. The ESI-MS spectrum showed the formula weight is 249.…”

“…The peaks' type, number and shape are in accordance with compound 6. In the 13 C NMR spectrum, there were seven signals, which are in accordance with the structure of compound 6. In the IR spectrum, the band at 3404 cm −1 is the NH 2 stretching vibration and 1136 cm −1 is the C-O-C stretching vibration.…”

“…NMR spectra were obtained on a Bruker 400 MHz Advance DMX 500 spectrometer ( 1 H NMR at 400 Hz, 13 C NMR at 100 Hz) in CDCl 3 using TMS as an internal standard. Chemical shifts (δ) are given in ppm and coupling constants (J) are given in Hz.…”

“…Any other modifications are rare. [9][10][11][12][13][14] There are two hydroxyl groups in the structure of isosorbide, the convenient transformation of which to other groups such as an amine group can be achieved. The hydrogen atom of the hydroxyl can also be substituted by other groups to give alkyl or aryl derivatives.…”

Optical Behaviors of Cholesteric Liquid-Crystalline Polyester Composites with Various Chiral Photochromic Dopants

“…For example, cholesteric color filters that can reveal reflected colors of red, green, and blue via a patterned mask are a good application of the principle . Furthermore, the effects of tuning helical twisting power of isosorbide-based chiral dopants on liquid crystals were reported. − …”