Chirality driven mesomorphic behaviour difference: dichiral compounds containing two lactate groups |
| |
| Authors: | Xiaoqing Wu Limin Wu Yongmin Guo Yi Li |
| |
| Institution: | 1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center for New-type Urbanization and Social Government of Jiangsu Province, Soochow University, Suzhou, P. R. China;2. School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province, China |
| |
| Abstract: | ABSTRACTFour compounds containing two lactate groups and one perfluorocarbon chain are designed and synthesised, whose chirality is tuned by changing the chirality of the lactic acid residues. (R,S)- and (S,R)-2 stereoiosomers exhibit an enantiotropic SmA phase, while (R,R)- and (S,S)-2 stereoisomers exhibit an enantiotropic SmA phase and an enantiotropic SmCd* one. Therefore, the chirality of the compounds plays an important role in the mesomorphic behaviours of the compounds. The optical activity of these liquid crystals is dominated by the chirality of the lactate group near the core. (R)- and (S)-1 with one lactic acid residue and one perfluorocarbon chain exhibit only an enantiotropic SmA phase. |
| |
| Keywords: | Perfluoroalkyl liquid crystal dichiral lactic acid |
|
|
