Crystalline structure of a liquid crystal forming ligated twin
作者： A. J. Waddon , T. P. Russell
关键词:
摘要: The solid state crystalline structure of a low molecular weight ligated dimer twin has been examined by TEM and x-ray diffraction methods. In this material each consists short, central rigid three phenylene ring segment, with short alkane tails attached at both ends; is joined to its connecting methyl group. This was found form layered period ∼35 A in which the molecule adopts an extended conformation wherein units their own sub-layers, imparting mosaic morphology system.
springer.com
sci-hub.se 参考文章(6)
J. Boon, E. P. Magré, Structural studies of crystalline poly(p‐phenylene oxides) I. Poly(p‐phenylene oxide) Macromolecular Chemistry and Physics. ,vol. 126, pp. 130- 138 ,(1969) , 10.1002/MACP.1969.021260115
David Creed, John R. D. Gross, Sarah L. Sullivan, Anselm C. Griffin, Charles E. Hoyle, Effect of Molecular Structure on Mesomorphism. 18.1 Twin Dimers Having Methylene, Ethylene Oxide and Siloxane Spacers Molecular Crystals and Liquid Crystals. ,vol. 149, pp. 185- 193 ,(1987) , 10.1080/00268948708082979
A.J. Waddon, A. Keller, D.J. Blundell, A comparison of oligomers and polymers in poly(aryl ketone): effect of chain folding on crystal morphology and generalizations therefrom Polymer. ,vol. 33, pp. 27- 33 ,(1992) , 10.1016/0032-3861(92)90555-B
C. W. Bunn, The crystal structure of long-chain normal paraffin hydrocarbons. The “shape” of the <CH2 group Transactions of The Faraday Society. ,vol. 35, pp. 482- 491 ,(1939) , 10.1039/TF9393500482
P.C. Dawson, D.J. Blundell, X-ray data for poly(aryl ether ketones) Polymer. ,vol. 21, pp. 577- 578 ,(1980) , 10.1016/0032-3861(80)90228-1
Anselm C. Griffin, Neal W. Buckley, William E. Hughes, David L. Wertz, Effect of Molecular Structure on Mesomorphism.11.1 A Siamese Twin Liquid Crystal Having Two Independently Smectogenic Conformations Molecular Crystals and Liquid Crystals. ,vol. 64, pp. 139- 144 ,(1981) , 10.1080/01406568108072519