Cationic Copper(II)-containing Surfactants: Molecular Structures, Film Morphology, and Influence on the Alignment of Nematic Mesogens
作者:Cláudio N. Verani、Jeffery Driscoll、Paul H. Keyes、Mary Jane Heeg
DOI:10.1021/ic5004098
日期:2014.6.2
mN·m–1 and average areas of ca. 50 Å2. A plateau around 15 mN·m–1 is observed for 3, 4, and 5 and associated with the formation of dendritic domains about 50 μm in size. Species 2 and 6 lack this plateau and show domains of ca. 5 μm. Once transferred onto solid substrates, the resulting Langmuir–Blodgett film of 3 at 18 mN·m–1 influences the alignment of the nematic liquid crystal N-(4-methoxybenzylidene)-4-butylaniline
我们讨论了阳离子金属表面活性剂[(L Py14)2 Cu II ClO 4 ] ClO 4(1),[(L Py16)2 Cu II ClO 4 ] ClO 4(2),[(L Py18)2 Cu II ClO 4 ] ClO 4(3),[(L Py18)2 Cu II NO 3 ] NO 3(4),[(L Py18)2 Cu II Cl] Cl(5)和[(L Py18)2 Cu II Br] Br(6)通过用铜处理含有四,六或十八烷基链的合适的烷基胺甲基-2-吡啶配体来获得盐。这些金属表面活性剂在红外光谱带,具有同位素模式的光谱质量和元素组成之间显示出极好的一致性。可用于单晶X射线数据1,2,5和先前公布3揭示了在基面上结合到每个烷基胺甲基吡啶配体的胺和吡啶上的三角双锥体铜(II)离子和在顶端位置上结合了阴离子大肠菌素。除了具有最短十四烷基(C 14)链的表面活性剂外,这些物质还产生具有45–55