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 MoreZhuzhou Farshine Chemical Industry Co., Ltd
Contact:0086-731-28482786
Address:No. 1,Shui Xian Road, He Tang Dictrict,Hunan-412000,China
Contact:+86-371-67759225
Address:No.32, Jinsuo Road, High-tech Zone
Xi'an yuanfar international trade company
website:https://www.yuanfarchemical.com
Contact:86-029-88745613 ext 828
Address:Floor19th ,B Building, Oak Block,No.36 South Fenghui Road, Dev. Zone of High-Tech Ind.,Xi’an, China
Kaymossy BioChem Tech Co., Ltd
website:http://www.kaimosi.com
Contact:0571-87191913/0571-87199097
Address:Room 215, Building 3rd, No.288 Ningxia Road, Qingdao city, China
Contact:18710867521(wechat)
Address:Rm10516,Galaxy Tech Building #2,No.25 Tangyan Rd,Hi-Tech Zone,Xi'an, 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)