以(+)-2-甲基丁醇为不对称中心制备了单手性中心与双手性中心两个系列的液晶用手性掺杂物,分别将其与4烷基联苯氰类向列相液晶混合.通过对单手性中心掺杂物/向列相液晶复合体系的研究,发现了手性中心的旋转自由度对其螺旋扭曲力的影响规律；进一步制备了双手性中心掺杂物,并对双手性中心掺杂物/向列相液晶复合体系的螺旋扭曲力及其螺距的温度依赖性进行研究,发现两个手性中心之间的链接方式对其螺旋扭曲力的温度依赖性有强烈的影响.
参考文献
| [1] | Yang D K,Huang X Y,Zhu Y M.Bistable cholesteric reflective display:materials and drive schemes[J].Annu.Rev.Mater.Sci.,1997,27(1):117-146. |
| [2] | Yuan X T,Zhang L P,Yang H.Study of selectively reflecting characteristics of polymer stabilised chiral nematic liquid crystal films with a temperature-dependent pitch length[J].Liquid Crystals,2010,37(4)..445-451. |
| [3] | Yuan X T,Cao H,Yang Z,etal.A selective reflecting film with a temperature-dependent pitch length[J].Chin.Chem.Lett.,2010,21(3):279-282. |
| [4] | Lee H J,Jin Z X,Aleshin A N,et al.Dispersion and current-voltage characteristics of helical polyacetylene single fibers[J].J.Am.Chem.Soc.,2004,126 (51):16722-16723. |
| [5] | Lee S W,Kim B,Lee D S,Lee H J,et al.Fabrication and mechanical properties of suspended one-dimensional polymer nanostructures.:polypyrrole nanotube and helical polyacetylene nanofibre[J].Nanotechnology,2006,17(4):992-996. |
| [6] | Ofuji M,Takano Y,Houkawa Y,et al.Microscopic orientational order of polymer chains in helical polyacetylene thin films studied by confocal laser Raman microscopy[J].J.Appl.Phys.,2006,45 (1):1710-1713. |
| [7] | Langeveld-Voss B M W,Janssen R A J.Christiaans M P T,et al.Circular dichroism and circular polarization of photoluminescence of highly ordered poly(3,4-di[(S)-2methylbutoxy]thiophene[J].J.Am.Chem.Soc.,1996,118 (20):4908-4909. |
| [8] | Peeters E,Christiaans M P T,Janssen R A J,et al.Circularly polarized electroluminescence from a polymer lightemitting diode[J].J.Am.Chem.Soc.,1997,119(41):9909-9910. |
| [9] | Bross P A,Schoberl U,Daub J.Carbohydrate modified conducting polymers:syntheses and electrochemistry of sugar linked azulenes and polyazulenes[J].AdV.Mater.,1991,3 (4):198-200. |
| [10] | Li W,Wang H L.Oligomer-assisted synthesis of chiral polyaniline nanofibers[J].J.Am.Chem.Soc.,2004,126(8):2278-2279. |
| [11] | Iwaura R,Hoeben F J M,Masuda M,et al.Molecular-level helical stack of a nucleotide-appended oligo(p-phenylenevinylene) directed by supramolecular self-Assembly with a complementary oligonucleotide as a template[J].J.Am.Chem.Soc.,2006,128(40):13298-13304. |
| [12] | Van Delden R A,Feringa B L.Color indicators of molecular chirality based on doped liquid crystals[J].Angew.Chem.,2001,40 (17):3198-3200. |
| [13] | Gray G W,Hird M,Lacey D,et al.The synthesis and rarsition temperatures of some 4,4"-dialkyl-and 4,4"-alkoxyalkyl-1,l′∶4′,1"-terphenyls with 2,3-or 2′,3′-difluoro substituentsand of their biphenyl analogues[J].J.Chem.Soc.Perkin Transactions,1989,2 (11):2041-2053. |
| [14] | Kuball H G,Bruning H.Helical twisting power and circular dichroism as chirality observations:the intramolecular and intermolecular chirality transfer[J].Chirality,1997,9(5):407-423. |
| [15] | Shkolnikova N I,Kutulya I A,Pivnenko N S,et al.Relationship between the temperature dependence of the induced helical pitch and the anisometry of molecules of chiral dopants[J].Liq.Cryst.,2005,50 (6):1084-1090. |
| [16] | Gottarelli G,Samori B,Stremmenos C,et al.Induction of cholesteric mesophases in nematic liquid crystals by some chiral aryl alkyl carbinols a quantitative investigation[J].Tetrahedron,1981,37 (2):395-399. |
| [17] | Gottarelli G,Spada G.Induced cholesteric mesophases-origin and applications[J].Mol.Cryst.Liq Cryst.,1985,123 (4):377-388. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%