Novel spiro-fluorenes from tandem radical addition for liquid crystalline monodisperse conjugated oligomers
文献类型：期刊论文
| 作者 | Zhang, Xiaojie1,2; Bu, Laju1,2; Qu, Yao1; Wang, Lixiang1; Geng, Yanhou1; Wang, Fosong1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2009 |
| 卷号 | 19期号:3页码:399-408 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/b811830b |
| 英文摘要 | 3'-Nonafluorobutylmethyl-4'-methyl-spiro[cyclopentyl-9,1']fluorenes were successfully synthesized via tandem radical-addition reactions between 9,9-diallylfluorenes and perfluorobutyl iodide in the presence of a radical initiator followed by reduction under mild conditions. Single crystal analysis indicates that two substituents at 3,4-positions of cyclopentane are in a maleinoid form. Accordingly, four oligo(fluorene-co-bithiophene)s with the same molecular length of similar to 10 nm (7 fluorene units and 12 thiophene units) containing one to three novel spiro-fluorene units were synthesized. The introduction of the spiro-fluorene units results in noticeable enhancement of both glass transition temperature (T(g)) and clearing point temperature (T(c)) of the oligomers, but has little effect on their photophysical properties. Exchanging three 9,9-dioctylfluorene units with 3'-nonafluorobutylmethyl-4'-methyl-spiro[cyclopentyl-9,1']fluorene units results in a 37 degrees C enhancement of T(g) and a 61 degrees C enhancement of T(c). All these results indicate that this new spiro-fluorene unit is an attractive building block for liquid crystalline conjugated polymers/oligomers with both high T(g) and T(c). |
| 语种 | 英语 |
| WOS记录号 | WOS:000262007300011 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67165]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Geng, Yanhou |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaojie,Bu, Laju,Qu, Yao,et al. Novel spiro-fluorenes from tandem radical addition for liquid crystalline monodisperse conjugated oligomers[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(3):399-408. |
| APA | Zhang, Xiaojie,Bu, Laju,Qu, Yao,Wang, Lixiang,Geng, Yanhou,&Wang, Fosong.(2009).Novel spiro-fluorenes from tandem radical addition for liquid crystalline monodisperse conjugated oligomers.JOURNAL OF MATERIALS CHEMISTRY,19(3),399-408. |
| MLA | Zhang, Xiaojie,et al."Novel spiro-fluorenes from tandem radical addition for liquid crystalline monodisperse conjugated oligomers".JOURNAL OF MATERIALS CHEMISTRY 19.3(2009):399-408. |
入库方式： OAI收割
来源：化学研究所
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