Novel main-chain liquid crystalline Diels-Alderdynamic networks (LCDANs) were prepared that exhibit unprecedented ease for actuator programming and reprocessing compared to existing liquid crystalline network (LCN) systems. Following cooling from 125 °C, LCDANs are deformed with aligned mesogens self-locked at roomtemperature by slowly formed Diels-Alder (DA) bonds, which allows for the formation
Azobenzene-containing liquid crystalline polyester with π–π interactions: diverse thermo- and photo-responsive behaviours
作者:Hai-Yi Zhong、Li Chen、Rong Yang、Zhi-Ying Meng、Xiao-Min Ding、Xiao-Feng Liu、Yu-Zhong Wang
DOI:10.1039/c6tc05493e
日期:——
An azobenzene-containing thermotropic liquidcrystalline polyester showing unique thermo- and photo-responsive behaviours was synthesized by polycondensation from mesogenic dial 4,4′-bis(6-hydroxyhexyloxy)azobenzene (BHHAB) with 2-phenylsuccinic acid (PSA), and named as poly(4,4′-bis(6-hydroxyhexyloxy)azobenzene phenylsuccinate) (PBHPS). Liquidcrystalline behaviours were investigated through differential
Roetz, U.; Lindau, J.; Weissflog, W., Molecular Crystals and Liquid Crystals (1969-1991), 1989, vol. 170, p. 185 - 194
作者:Roetz, U.、Lindau, J.、Weissflog, W.、Reinhold, G.、Unseld, W.、Kuschel, F.
DOI:——
日期:——
High-Power Actuation from Molecular Photoswitches in Enantiomerically Paired Soft Springs
作者:Sarah J. Aßhoff、Federico Lancia、Supitchaya Iamsaard、Benjamin Matt、Tibor Kudernac、Stephen P. Fletcher、Nathalie Katsonis
DOI:10.1002/anie.201611325
日期:2017.3.13
isomerization of a light-responsive molecular switch that drives the twisting of strips of liquid-crystal elastomers. The strips twist in opposite directions and work against each other until the pod pops open from stress. This mechanism allows the photoisomerization of molecular switches to stimulate rapid shape changes at the macroscale and thus to maximize actuation power.