201794-01-6

Upstream product

• 27914-73-4 4-acetoxybenzoyl chloride 
• 185756-31-4 (3R,3aS,6S,6aS)-hexahydrofuro[3,2-b]furan-3,6-bis(4-hydroxybenzoate) 
• 39649-71-3 4-hexyloxybenzoyl chloride 
• 1337985-51-9 1,4:3,6-dianhydro-D-sorbitol-2,5-bis(4-acetoxybenzoate) 
• 2345-34-8 4-acetyloxy-benzoic acid 
• 1142-39-8 para-hexyloxybenzoic acid 
• 99-96-7 4-hydroxy-benzoic acid 
• 652-67-5 Isosorbide 

Relevant academic research and scientific papers

Properties and structural coloured film preparation of some chiral dopants derived from D-Isosorbide

A series of chiral dopants derived from D-isosorbide were synthesized. Some of them exhibita monotropicsmecticA phase. Comparison of the melting points of these chiral dopants, the decrease of them is mainly driven by the large entropy change. The helical

Tuning helical twisting power of isosorbide-based chiral dopants by chemical modifications

Isosorbide-based chiral dopants (ICD) with various substituent groups were newly synthesized to control their helical twisting powers (HTP). Phase transition behaviors of ICD molecules were first investigated by combined techniques of differential scanning calorimetry, wide-angle X-ray diffraction, and cross-polarized optical microscopy. ICD with n-hexyloxy end groups formed the multiple ordered phases, and those with methoxy or acetoxy end groups exhibited a simple crystal-to-isotropic transition. Energy-minimized chemical conformations of ICD molecules revealed that all the ICDs had twisted conformations and that the extension of the benzoyl ester moiety induced a higher twisted conformation. By varying substitution groups, HTPs of ICDs were controlled from 26.6 to 80.μm-1. Particularly, ICD with an acetoxy end group (ICD-2) showed the largest HTP. It was also realized that by controlling the content of ICD-2 from 3.0 to 4.5mol%, the helical pitch length of cholesteric LC mixture was adjusted to reflect a specific visible light. Copyright Taylor & Francis Group, LLC.