دورية أكاديمية
Saddle-shaped tetraphenylenes with peripheral gallic esters displaying columnar mesophases
| العنوان: | Saddle-shaped tetraphenylenes with peripheral gallic esters displaying columnar mesophases |
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| المؤلفون: | Eugen Wuckert, Constanze Hägele, Frank Giesselmann, Angelika Baro, Sabine Laschat |
| المصدر: | Beilstein Journal of Organic Chemistry, Vol 5, Iss 1, p 57 (2009) |
| بيانات النشر: | Beilstein-Institut, 2009. |
| سنة النشر: | 2009 |
| المجموعة: | LCC:Science LCC:Organic chemistry |
| مصطلحات موضوعية: | columnar mesophases, discotic liquid crystals, tetraphenylene, Science, Organic chemistry, QD241-441 |
| الوصف: | Tetraphenylenes 2 with eight peripheral gallic esters were prepared in two steps from octamethoxytetraphenylene 1 in 19–72% yield. Investigation of the mesomorphic properties of 2 by DSC, POM and X-ray diffraction revealed that derivatives 2a–d with short alkoxy chain lengths (C5–C8) did not show any mesomorphic properties, whereas compounds 2e–i with C9–C13 chains displayed rectangular columnar mesophases and compounds 2j–l with C14–C16 chains displayed hexagonal columnar mesophases. Furthermore an anomalous odd-even effect of the clearing points of compounds 2e–l versus chain length was detected. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1860-5397 |
| Relation: | https://doaj.org/toc/1860-5397 |
| DOI: | 10.3762/bjoc.5.57 |
| URL الوصول: | https://doaj.org/article/5da3dda7d35349d5be8fdf9f7345302b |
| رقم الأكسشن: | edsdoj.5da3dda7d35349d5be8fdf9f7345302b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18605397 |
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| DOI: | 10.3762/bjoc.5.57 |