Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure
The synthesis and thermal properties of new shape-persistent macrocycles of different sizes decorated with intraannular alkyl chains are described. The alkyl chain length is in all cases sufficient to cross the rings and to fill their interior completely. The investigation of the thermal behavior ha...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2008-01-01
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| Series: | Beilstein Journal of Organic Chemistry |
| Online Access: | https://doi.org/10.1186/1860-5397-4-1 |
| _version_ | 1818657428330250240 |
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| author | Sigurd Höger Jill Weber Andreas Leppert Volker Enkelmann |
| author_facet | Sigurd Höger Jill Weber Andreas Leppert Volker Enkelmann |
| author_sort | Sigurd Höger |
| collection | DOAJ |
| description | The synthesis and thermal properties of new shape-persistent macrocycles of different sizes decorated with intraannular alkyl chains are described. The alkyl chain length is in all cases sufficient to cross the rings and to fill their interior completely. The investigation of the thermal behavior has shown that the smaller cycles do not exhibit thermotropic mesophases. Single crystal x-ray analysis indicates that the anisotropy in these compounds is too small to describe them as plates rather than spheres. For the larger macrocycles it is shown that longer adaptable substituents decrease the phase transition temperatures compared to previously described structures. |
| first_indexed | 2024-12-17T03:41:19Z |
| format | Article |
| id | doaj.art-65a524d36bdc4f87ad500e172978fab4 |
| institution | Directory Open Access Journal |
| issn | 1860-5397 |
| language | English |
| last_indexed | 2024-12-17T03:41:19Z |
| publishDate | 2008-01-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Organic Chemistry |
| spelling | doaj.art-65a524d36bdc4f87ad500e172978fab42022-12-21T22:05:00ZengBeilstein-InstitutBeilstein Journal of Organic Chemistry1860-53972008-01-0141110.1186/1860-5397-4-11860-5397-4-1Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structureSigurd Höger0Jill Weber1Andreas Leppert2Volker Enkelmann3Kekulé-Institut für Organische Chemie und Biochemie der Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, GermanyInstitut für Technische Chemie und Polymerchemie, Universität Karlsruhe (TH), Engesserstr. 18, 76131 Karlsruhe, GermanyInstitut für Technische Chemie und Polymerchemie, Universität Karlsruhe (TH), Engesserstr. 18, 76131 Karlsruhe, GermanyMax-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, GermanyThe synthesis and thermal properties of new shape-persistent macrocycles of different sizes decorated with intraannular alkyl chains are described. The alkyl chain length is in all cases sufficient to cross the rings and to fill their interior completely. The investigation of the thermal behavior has shown that the smaller cycles do not exhibit thermotropic mesophases. Single crystal x-ray analysis indicates that the anisotropy in these compounds is too small to describe them as plates rather than spheres. For the larger macrocycles it is shown that longer adaptable substituents decrease the phase transition temperatures compared to previously described structures.https://doi.org/10.1186/1860-5397-4-1 |
| spellingShingle | Sigurd Höger Jill Weber Andreas Leppert Volker Enkelmann Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure Beilstein Journal of Organic Chemistry |
| title | Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure |
| title_full | Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure |
| title_fullStr | Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure |
| title_full_unstemmed | Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure |
| title_short | Shape-persistent macrocycle with intraannular alkyl groups: some structural limits of discotic liquid crystals with an inverted structure |
| title_sort | shape persistent macrocycle with intraannular alkyl groups some structural limits of discotic liquid crystals with an inverted structure |
| url | https://doi.org/10.1186/1860-5397-4-1 |
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