Effect of the structure of gelators on electro-optical properties of liquid crystal physical gels.
Low molecular mass organic gelator (LMOG) as an important component of liquid crystal physical gel has a great influence on the electro-optical properties. In this paper, three analogues of amide gelator were synthesized and employed as LMOGs in nematic liquid crystal 5CB. Both hydrogen-bonding and pi-pi-stacking interactions in the gel phase were found to stabilize the self-assembled structure. It was observed that the morphology was highly dependent on the crystallinity of gelators, which was affected by the intensity of hydrogen bonding. The thicker fibril was obtained with higher crystallinity of LMOG, while the thinner fibril was obtained with lower crystallinity. Moreover, the electro-optical properties of liquid crystal physical gels were proposed to be related to the interaction between the fibrils and the liquid crystal molecules.
He
Jie
J
State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
Yan
Bin
B
Yu
Binyu
B
Bao
Ruiying
R
Wang
Xiaoan
X
Wang
Yinghan
Y
D000577:Amides / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004583:Electrons; D005782:Gels / Q000737:chemistry; D050866:Liquid Crystals / Q000737:chemistry*; D015394:Molecular Structure; D008970:Molecular Weight; D055095:Optics and Photonics; D010316:Particle Size; D013055:Spectrophotometry, Infrared / Q000379:methods; D013499:Surface Properties; D014961:X-Ray Diffraction
D000577:Amides; D005782:Gels