以1,2-丙二醇为不对称中心制备了一系列手性掺杂物,与4-烷基联苯氰类向列相液晶混合配制成手征向列相液晶.通过对手征向列相液晶螺距及螺距温度依赖性的研究,发现手性掺杂物分子的末端烷基链的增长对其螺旋扭曲力有一定的影响;而手性碳原子上取代基的改变,对手性分子的螺旋扭曲力和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.,1997,27:117-146. |
| [2] | 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. |
| [3] | Lee S W,Kim B,Lee D S,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. |
| [4] | 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. |
| [5] | 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. |
| [6] | Peeters E,Christiaans M P T,Janssen R A J,et al.Circularly polarized electroluminescence from a polymer light-emitting diode[J].J.Am.Chem.Soc.,1997,119(41):9909-9910. |
| [7] | 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. |
| [8] | Li W,Wang H L.Oligomer-assisted synthesis of chiral polyaniline nanofibers[J].J.Am.Chem.Soc.,2004,126(8):2278-2279. |
| [9] | 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. |
| [10] | 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. |
| [11] | 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.,1989,2(11):2041-2053. |
| [12] | 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 |
| [13] | Shkolnikova N I,Kutulya L 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. |
| [14] | 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):395-398. |
| [15] | Lesac A,Narancic S,Sepelj M,et al.Synthesis of novel chiral dopants based on optically active p-substituted mandelic acids[J].Tetrahedron:Asymmetry,2003,14(18):2731-2737. |
| [16] | Gottarelli G,Spada G.Induced cholesteric mesophases-origin and applications[J].Mol.Cryst.Liq Cryst.,1985,23(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%