Analytical Chemistry p. 651 - 658 (1985)
Update date:2022-07-29
Topics:
Apfel, M. A.
Finkelmann, H.
Janini, G. M.
Laub, R. J.
Luehmann, B.-H.
et al.
The synthesis and characterization of a variety of mesomorphic (liquid-crystalline) side-chain polysiloxane (MEPSIL) solvents, said to be useful as gas chromatographic stationary phases, are described and discussed.The synthetic scheme is based upon the hydrosilation reaction that occurs when 4-(allyloxy)benzoyl esters are contacted with poly(methylsiloxane) in the presence of a dicyclopentadienylplatinum(II) catalyst, while product characterization is carried out by IR, NMR, GC, DSC, elemental analysis, and direct-observation hot-stage light-polarized microscopy.Selectivity of the MEPSIL phases is shown to differ very substantially from those exhibited by all other common GC solvents.The MEPSIL found overall to be the best suited as a GC stationary liquid exhibits a melting point of 139 deg C (k -> n) and a nematic/isotropic (n -> i) transition temperature of 319 deg C, while the practical operating limits of the material span 150 to in excess of 300 deg C.
View MoreQINGDAO NEW FLOURISH INTERNATIOANAL TRADE CO., LTD.
Contact:+86 532 80861829
Address:No. 1, Yinchuan East Road, 266061, Qingdao, China
Wuxi Zuping Food Science And Technology Co.,LTD.
Contact:+86-510-87210822
Address:Guanlin town
Yancheng Creator Chemical Co., Ltd
Contact:0086-515-88710008 88710068 88710858 88710868
Address:No.21 Renming Road, Longgang Town, Yandu County,Yancheng City
Nantong Baokai Chemical Co., Ltd (Hangzhou Baokai Bio-Chemicals Co.,Ltd.)
Contact:+86-513-83886111
Address:No. 68 Suzhou road ,Binjiang Fine Chemical Industrial Park , Beixin town, Qidong city ,Jiangsu province
Contact:86-10-62664360
Address:Building 10,No.18 AnNingZhuang East Road, GuangHua Pioneer Park,HaiDian District, BeiJing China
Doi:10.1021/jm050886n
(2006)Doi:10.1002/anie.200700301
(2007)Doi:10.1021/jm0704447
(2007)Doi:10.1021/jm070427h
(2007)Doi:10.1002/ardp.19883211203
(1988)Doi:10.1002/ejic.200600280
(2006)