Molecular Crystals and Liquid Crystals p. 130 - 138 (2016)
Update date:2022-08-16
Topics:
Patel, Priya K.
Shah
A novel homologous series RO-C6H4-COO-C6H4-CO-CH:CH-C6H4-OC12H25 of chalcones have been synthesized and studied with a view to understand and establish the effects of molecular structure on liquid crystal (LC) properties of a substance. Liquid crystal properties of a novel series commences from C6 homologue and continue upto the last C18 homologue derivative of a series, as enantiotropically nematogenic without exhibition of smectogenic characteristic. The rest of the homologues (C1 to C5) are nonliquid crystals (NLC). Transition temperatures of homologues (C1 to C18) are determined by an optical polarizing microscopy equipped with a heating stage. Textures of a nematic phase are threaded or schlieren. Transition curves of a phase diagram behaved in normal manner except for C18 member of a series, which drastically behaved with abnormal manner. N-I transition curve exhibits odd–even effect. Average thermal stability for nematic is 110.25°C and mesophase length ranges from 10°C to 39°C. Analytical and spectral data supported the molecular structures of homologues. LC properties of present novel series are compared with structurally similar other known homologous series. Thus, present novel series of chalcones is partly nematogenic and of middle-ordered melting type.
View MoreContact:86-21-34622192,13917187091,21-34622765
Address:No. 500 Caobao Road Shanghai P.R China
Shifang Taifeng New Flame Retardant Co., Ltd
Contact:02884721008
Address:tingjiang industrial park, hefeng town
Zhejiang Allied Chemical Co.,Ltd
Contact:18967038207
Address:Area A-30, High-tech Industrial Park, Quzhou, Zhejiang, China.
Anhui Eapearl Chemical Co., Ltd.
Contact:86-562-5858458
Address:358 South Huaihe Road
website:http://www.finerchem.com
Contact:+86-531-88989536
Address:New Material Industry Park, Jinan Ciyt, China
Doi:10.1016/j.tetlet.2018.07.050
(2018)Doi:10.2174/157017861201150112125024
(2015)Doi:10.1271/bbb1961.52.1233
(1988)Doi:10.1016/0040-4020(75)85040-X
(1975)Doi:10.1021/jo01327a067
(1979)Doi:10.1021/jo01062a066
(1961)