Download or read book Characterization of a 4 methoxyphenyl 4 allyoxybenzoate liquid crystal stationary phase for high performance liquid chromatography written by Denise L. Thomas and published by . This book was released on 1996 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Synthesis and Characterization of Bonded Liquid Crystal Stationary Phases for Use in High Performance Liquid Chromatography written by Mark Allen Vidensek and published by . This book was released on 1990 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Synthesis and Characterization of a Novel Liquid Crystal Stationary Phase for HPLC written by Christine A. Kenny and published by . This book was released on 1999 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of a New Chemically Bonded Liquid Crystal Stationary Phase for HPLC written by Sheela Muley and published by . This book was released on 1999 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of a cholesteryl 10 undecenoate liquid crystal stationary phase for HPLC written by Stephanie M. Piraino and published by . This book was released on 1998 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Crystal Stationary Phases for High Performance Liquid Chromatography written by Paul Leon Sherman and published by . This book was released on 1977 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Dynamics of a Liquid Crystal Through Band Shape Analysis written by Stephen Michael Gregory and published by . This book was released on 1979 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemically Bonded Liquid Crystals as Stationary Phases for High Performance Liquid Chromatography written by Shirish K. Shah and published by . This book was released on 1991 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Crystas as Stationary Phases in Gas Liquid Chromatography written by Nasreen Jber and published by LAP Lambert Academic Publishing. This book was released on 2014-03-04 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fact of intermolecular reactions or interactions between the liquid crystal and the chromatographed substances is important for the understanding of the phenomena taking place in the chromatographic column. The structure of the molecules and their polarity and polarizability affect, as well as, the solubility of the chromatographed substances in the liquid crystal plays an important influence on the separation. The properties of the liquid crystal stationary phases depend both on the structure of the main chain of the molecule and on the terminal substituents which strongly affect the polarity of the molecules. However, an equally important or even greater effect on the chromatographic properties of liquid crystals is exerted by the lateral substituents. These substituents not only affect the intermolecular reactions between the liquid crystal and the chromatographed substance but also the liquid crystal - liquid crystal interactions. The lateral substituents also affect the selectivity of the liquid crystal owing to the changes they produce in the distance between its molecules.

Download or read book Crystal Liquid Gas Phase Transitions and Thermodynamic Similarity written by Vladimir P. Skripov and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professor Skripov obtained worldwide recognition with his monograph "Metastable liquids", published in English by Wiley & Sons. Based upon this work and another monograph published only in Russia, this book investigates the behavior of melting line and the properties of the coexisting crystal and liquid phase of simple substances across a wide range of pressures, including metastable states of the coexisting phases. The authors derive new relations for the thermodynamic similarity for liquid-vapour phase transition, as well as describing solid-liquid, liquid-vapor and liquid-liquid phase transitions for binary systems employing the novel methodology of thermodynamic similarity.

Download or read book Application of High Performance Liquid Chromatography with Superheated Water Eluent and PS DVB Stationary Phase to the Analysis of Barbiturates written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cholesteryl 10 Undecenoate Liquid Crystal Stationary Phase written by Katie Shearer and published by . This book was released on 2002 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book From Crystal to Columnar Discotic Liquid Crystal Phases written by Siwei Leng and published by . This book was released on 2009 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Four series of potential organic electronic materials have been designed and synthesized to investigate the effects of fused rigid ring size and shape as well as the location, lengths, and chemical structures of their flexible side chain on phase properties. One of these series of conjugated compounds, TQPP-[SCn]4, was synthesized. It was determined that the transition temperatures of this series of compounds can be tuned by modifying the attached alkyl chains. DSC, WAXD, and SAED studies indicated that the condensed state phase transitions of these compounds were all crystal-crystal transitions. To achieve liquid crystalline phases, another of series compounds, TQPP-[t-Bu]2-[OR(B)]4 with an attached bulky tert-butyl group at the 2 and 11 positions have been designed. A columnar liquid crystalline phase (Colr) with C2/m symmetry at high temperature has been identified in these compounds. A high ordered liquid crystalline phase at room temperature has been obtained in TQPP-[t-Bu]2-[OC20H41B]4. By extending the rigid core, TPPQPP-[t-Bu]2-[OR(B)]4 was synthesized and shows a higher isotropization temperature than those with the same substituents in TQPP-[t-Bu-[OR(B)]2. The Colr phase with C2/m symmetry also has been detected at high temperature in TPPQPP-[t-Bu]2-[OC20H41B]4. A unique phase with a crystalline phase within each of the columns while lacking the long-range order among the side chains at room temperature has also been identified. It is the result of a well-adjusted balance between the size of the core and the length and structure of side chains. Thermal behaviors of HDATAN-[OR]6 were complicated when the symmetry of the rigid core changes to three-fold. A crystalline phase only can be formed at elevated temperature during heating or by mechanical shear in compounds with shorter sides chains (R= -C10H21 and -C11H23). Only crystalline phases were identified in the compounds with longer side chains (R= -C14H21 and -C15H23). Based on the experimental results observed, we can conclude that changes in the alkyl tail's architecture affect the phase behavior more significantly than changes in its length. Tailoring the alkyl tail size, core size, and core shape leads to a promising way to design the discotic columnar liquid crystalline phase."--Abstract.

Download or read book Dichroic Dyes for Liquid Crystal Displays written by Aleksandr V. Ivashchenko and published by CRC Press. This book was released on 2018-01-31 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic presentation of issues pertaining to the development of dichroic dyes applied in electrooptical systems for displaying and processing data. It explains the theory of the guest-host effect and the methodology of engineering dichroic dye (DD) molecules with specified characteristics. The book then examines the properties of currently known DDs, including the most interesting examples of synthesis. Various aspects of designing LCM for guest-host devices and available designs of guest-host LCDs are considered as well. Characteristics of dichroic dyes are presented in the Appendix as an added benefit to readers.

Download or read book Characterization of Liquid crystal Compounds with Chiral Smectic C Phase written by Sarah Siddiqi and published by . This book was released on 1985 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phase Transitions in Liquid Crystals written by Arthur N. Chester and published by . This book was released on 2014-01-15 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Critical Evaluation of Liquid Crystal Transition Temperatures I 4 4 alkyl alkoxyphenylbenzoates written by Terence T. Blair and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: