213017-46-0Relevant academic research and scientific papers
Amphiphilic dendritic peptides: Synthesis and behavior as an organogelator and liquid crystal
Gao, Baoxiang,Li, Hongxia,Xia, Defang,Sun, Sufang,Ba, Xinwu
, p. 198 - 203 (2011)
New amphiphilic dendritic peptides on dendritic polyaspartic acid were designed and synthesized. The organogel and liquid crystal properties of these amphiphilic dendritic peptides were fully studied by field-emission SEM, temperature dependent FT-IR, dif
Helical columnar liquid crystals based on dendritic peptides substituted perylene bisimides
Gao, Baoxiang,Xia, Defang,Zhang, Licui,Bai, Qianqian,Bai, Libin,Yang, Tao,Ba, Xinwu
, p. 15975 - 15980 (2011)
New columnar liquid crystals based on perylene bisimides (PBIs) were synthesized by introducing dendritic peptides onto the two ends of the imide. The self-assembly behaviour of PBIs in solution and in film was investigated through temperature-dependent and solvent-dependent ultraviolet-visible absorption spectroscopy. The mesomorphic behaviour was studied by polarizing optical microscopy, differential scanning calorimetry, small-angle X-ray diffraction and temperature-dependent Fourier transform infrared spectroscopy. Ordered columnar mesophases were observed for PBIs at room temperature. Circular dichroism studies demonstrate that these materials exhibit supramolecular optical activity in the liquid crystalline state, which is attributed to helical columnar organization. The hydrogen bonds at the periphery of PBIs result in the ordered columnar mesophases structure with small inter-disk distances of 3.4 A
