Zero-field nuclear magnetic resonance of a nematic liquid crystal
The molecular order parameter of CH/sub 2/Cl/sub 2/ in a nematic liquid crystal was measured by using a version of zero-field NMR employing pulsed dc magnetic fields. Spectral frequencies and intensities are shown to reflect the ordering on a molecular and macroscopic scale, respectively. Samples or...
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| Veröffentlicht in: | J. Phys. Chem.; (United States) 1986-04, Vol.90 (8), p.1577-1581 |
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| container_title | J. Phys. Chem.; (United States) |
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| creator | Thayer, A. M Millar, J. M Luzar, M Jarvie, T. P Pines, A |
| description | The molecular order parameter of CH/sub 2/Cl/sub 2/ in a nematic liquid crystal was measured by using a version of zero-field NMR employing pulsed dc magnetic fields. Spectral frequencies and intensities are shown to reflect the ordering on a molecular and macroscopic scale, respectively. Samples oriented in high magnetic field did not significantly change their state of alignment during the time scale of the field cycle. Zero-field measurements of the order parameter yielded values within experimental error of those measured in high field. A zero-field echo experiment was performed to decrease the effect of residual fields on line width. Dipolar order was created in zero field by using a pulsed dc field analogue of the Jeener-Brokaert experiment. 26 references, 8 figures. |
| doi_str_mv | 10.1021/j100399a024 |
| format | Article |
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M</creatorcontrib><creatorcontrib>Millar, J. M</creatorcontrib><creatorcontrib>Luzar, M</creatorcontrib><creatorcontrib>Jarvie, T. P</creatorcontrib><creatorcontrib>Pines, A</creatorcontrib><creatorcontrib>Univ. of California, Berkeley</creatorcontrib><title>Zero-field nuclear magnetic resonance of a nematic liquid crystal</title><title>J. Phys. Chem.; (United States)</title><addtitle>J. Phys. Chem</addtitle><description>The molecular order parameter of CH/sub 2/Cl/sub 2/ in a nematic liquid crystal was measured by using a version of zero-field NMR employing pulsed dc magnetic fields. Spectral frequencies and intensities are shown to reflect the ordering on a molecular and macroscopic scale, respectively. Samples oriented in high magnetic field did not significantly change their state of alignment during the time scale of the field cycle. Zero-field measurements of the order parameter yielded values within experimental error of those measured in high field. A zero-field echo experiment was performed to decrease the effect of residual fields on line width. 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P ; Pines, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a386t-29d29f0c7f33fa7e6eb412ad4cda0ed732638bed36ffc23fa488f2368834a5363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)</topic><topic>Applied sciences</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>CRYSTALS</topic><topic>DATA</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>FLUIDS</topic><topic>INFORMATION</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>LIQUID CRYSTALS</topic><topic>LIQUIDS</topic><topic>MAGNETIC FIELDS</topic><topic>MAGNETIC RESONANCE</topic><topic>METHYLENE CHLORIDE</topic><topic>NMR SPECTRA</topic><topic>NUCLEAR MAGNETIC RESONANCE</topic><topic>NUMERICAL DATA</topic><topic>ORDER PARAMETERS</topic><topic>ORGANIC CHLORINE COMPOUNDS</topic><topic>ORGANIC COMPOUNDS</topic><topic>ORGANIC HALOGEN COMPOUNDS</topic><topic>Other techniques and industries</topic><topic>Physics</topic><topic>RESONANCE</topic><topic>SPECTRA</topic><topic>Structure of solids and liquids; crystallography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thayer, A. M</creatorcontrib><creatorcontrib>Millar, J. M</creatorcontrib><creatorcontrib>Luzar, M</creatorcontrib><creatorcontrib>Jarvie, T. P</creatorcontrib><creatorcontrib>Pines, A</creatorcontrib><creatorcontrib>Univ. of California, Berkeley</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>J. Phys. Chem.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Thayer, A. M</au><au>Millar, J. M</au><au>Luzar, M</au><au>Jarvie, T. P</au><au>Pines, A</au><aucorp>Univ. of California, Berkeley</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Zero-field nuclear magnetic resonance of a nematic liquid crystal</atitle><jtitle>J. Phys. Chem.; (United States)</jtitle><addtitle>J. Phys. Chem</addtitle><date>1986-04-01</date><risdate>1986</risdate><volume>90</volume><issue>8</issue><spage>1577</spage><epage>1581</epage><pages>1577-1581</pages><issn>0022-3654</issn><eissn>1541-5740</eissn><coden>JPCHAX</coden><abstract>The molecular order parameter of CH/sub 2/Cl/sub 2/ in a nematic liquid crystal was measured by using a version of zero-field NMR employing pulsed dc magnetic fields. Spectral frequencies and intensities are shown to reflect the ordering on a molecular and macroscopic scale, respectively. Samples oriented in high magnetic field did not significantly change their state of alignment during the time scale of the field cycle. Zero-field measurements of the order parameter yielded values within experimental error of those measured in high field. A zero-field echo experiment was performed to decrease the effect of residual fields on line width. Dipolar order was created in zero field by using a pulsed dc field analogue of the Jeener-Brokaert experiment. 26 references, 8 figures.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/j100399a024</doi><tpages>5</tpages></addata></record> |
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| source | ACS Publications |
| subjects | 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987) Applied sciences Condensed matter: structure, mechanical and thermal properties CRYSTALS DATA Exact sciences and technology EXPERIMENTAL DATA FLUIDS INFORMATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY LIQUID CRYSTALS LIQUIDS MAGNETIC FIELDS MAGNETIC RESONANCE METHYLENE CHLORIDE NMR SPECTRA NUCLEAR MAGNETIC RESONANCE NUMERICAL DATA ORDER PARAMETERS ORGANIC CHLORINE COMPOUNDS ORGANIC COMPOUNDS ORGANIC HALOGEN COMPOUNDS Other techniques and industries Physics RESONANCE SPECTRA Structure of solids and liquids crystallography |
| title | Zero-field nuclear magnetic resonance of a nematic liquid crystal |
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