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Details van artikel 59 van 131 gevonden artikelen
| Titel: |
Nematogens containing oxyethylene units at a lateral or terminal position and their mixtures with salts |
| Auteur: | |
| Verschenen in: |
Liquid crystals |
| Paginering: | Jaargang 28 (2001) nr. 11 pagina's 1691-1698 |
| Jaar: |
2001-01-01 |
| Inhoud: |
Short terminal polyoxyethylene chains may be introduced into mesogens containing lateral substituents such as two hexyloxy chains or a crown-ether fragment. These compounds have a large nematic range near room temperature and can dissolve large amounts of the salt LiBF4 without destroying the nematic arrangment. In the nematic phase, the ions are ordered and the quadrupolar splitting associated with these ions can allow this ordering to be monitored. Increasing the salt concentration does not seem to change the ordering of the individual ions. The 13C thermal evolution of the field-induced chemical shift in the oxyethylene (OE) units with or without salt does not show any real difference, indicating that the interaction between the ions and the mesogen is small. This means that there is very little change in conformation in the OE unit when adding salt to the mesogen. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 59 van 131 gevonden artikelen
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