Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
Sci Adv. 2017 Feb 10;3(2):e1602102. doi: 10.1126/sciadv.1602102. eCollection 2017 Feb.
A lamellar liquid crystal (LC) phase of certain bent-core mesogenic molecules can be grown in a manner that generates a single chiral helical nanofilament in each of the cylindrical nanopores of an anodic aluminum oxide (AAO) membrane. By introducing guest molecules into the resulting composite chiral nanochannels, we explore the structures and functionality of the ordered guest/host LC complex, verifying the smectic-like positional order of the fluidic nematic LC phase, which is obtained by the combination of the LC organization and the nanoporous AAO superstructure. The guest nematic LC 4'--pentyl-4-cyanobiphenyl is found to form a distinctive fluid layered ordered LC complex at the nanofilament/guest interface with the host 1,3-phenylene bis[4-(4-nonyloxyphenyliminomethyl)benzoate], where this interface contacts the AAO cylinder wall. Filament growth form is strongly influenced by mixture parameters and pore dimensions.
某些弯曲中心介晶分子的层状液晶 (LC) 相可以以这样的方式生长，即在每个阳极氧化铝 (AAO) 膜的圆柱形纳米孔中生成单个手性螺旋纳米丝。通过将客体分子引入所得的复合手性纳米通道中，我们研究了有序客体/主体 LC 配合物的结构和功能，验证了流体向列 LC 相的类似近晶的位置有序性，该有序性是通过 LC 组织和纳米多孔 AAO 超结构的组合获得的。发现客体向列 LC 4'--戊基-4-氰基联苯在纳米丝/客体界面处与主体 1,3-亚苯基双[4-(4-壬氧基苯亚氨基甲基)苯甲酸酯]形成独特的流体层状有序 LC 配合物，其中该界面与 AAO 圆柱壁接触。丝的生长形态受混合物参数和孔尺寸的强烈影响。
