期刊論文
| 學年 | 96 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2008-01-18 |
| 作品名稱 | Star-Shaped Mesogens of Triazine-Based Dendrons and Dendrimers as Unconventional Columnar Liquid Crystals |
| 作品名稱（其他語言） | |
| 著者 | 徐秀福; Hsu, Hsiu-fu; Lai, Long-li ; Lee, Cheng-hua; Wang, Ling-yung; Cheng, Kung-lung |
| 單位 | 淡江大學化學學系 |
| 出版者 | Washington: American Chemical Society |
| 著錄名稱、卷期、頁數 | Journal of Organic Chemistry 73(2), pp.485-490 |
| 摘要 | [GRAPHICS] Dendrons G(n)-Cl and G(n)-NH (n = 2-4) and novel dendrimers G(n)-N similar to N-G(n) (n = 2-4) based on triazine and piperazine units were efficiently prepared in good yields without employing the protection and deprotection processes and are fully characterized by H-1 NMR and C-13 NMR spectroscopies, elemental analysis, and mass spectroscopy. These compounds are transparent and possess good thermal stability. G(4)-Cl shows a monotropic columnar phase in a narrow range with a coexisting crystalline phase. Dendron G(4)-NH shows a rectangular column-phase, and dendrimer G(4)-N similar to N-G(4) exhibits a monotropic hexagonal columnar phase. These identifications were supported by the polarizing optical scope and powder XRD studies. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0022-3263 |
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| 產學合作 | |
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| 國別 | USA |
| 公開徵稿 | |
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| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25229 ) |