An Excellent Fluorescent Dye with a Twistable Aromatic Chain and Its Axially Chiral Crystals
文献类型：期刊论文
| 作者 | Ma, Yan; Hao, Rui; Shao, Guangsheng; Wang, Yuan |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY A
 |
| 出版日期 | 2009-04-30 |
| 卷号 | 113期号:17页码:5066-5072 |
| ISSN号 | 1089-5639 |
| DOI | 10.1021/jp900514e |
| 英文摘要 | A new organic fluorescent dye, 2,4-dichloro-6-[p-(N,N-diethylamino)biphenyly]-1,3,5-triazine (DBQ), with an electron withdrawing-donating pair bridged by a twistable aromatic chain has been synthesized. DBQ exhibits high fluorescence quantum yields (0.96 in hexane and 0.71 in THF), high extinction coefficients, and an excitation window extending up to similar to 480 nm. Due to the strong intramolecular charge transfer character., DBQ shows obviously solvent-dependent Stokes shifts with a value as high as 6360 cm(-1) in THF and controllable fluorescence emission in the visible region from "blue" to "orange". The axially chiral structures of DBQ crystals were clearly revealed by the X-ray analyses and CD spectroscopy measurements. Two enantiomers of DBQ were obtained by spontaneous resolution upon crystallization without any chiral auxiliary. The low rotation barriers around the interannular bonds in DBQ molecules resulted in an efficient and selective multiplication of each of the chiral structures when DBQ crystallized in THF at room temperature in the presence of an enantiopure crystal seed, leaving racemized DBQ molecules in the solution. The special crystalline properties of DBQ provided a new approach to the design and synthesis of organic chiral crystals. The photophysical properties of' DBQ make it promising in the preparation of new fluorescent probes with high sensitivity. |
| 语种 | 英语 |
| WOS记录号 | WOS:000265529800033 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67377]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Yuan |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yan,Hao, Rui,Shao, Guangsheng,et al. An Excellent Fluorescent Dye with a Twistable Aromatic Chain and Its Axially Chiral Crystals[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2009,113(17):5066-5072. |
| APA | Ma, Yan,Hao, Rui,Shao, Guangsheng,&Wang, Yuan.(2009).An Excellent Fluorescent Dye with a Twistable Aromatic Chain and Its Axially Chiral Crystals.JOURNAL OF PHYSICAL CHEMISTRY A,113(17),5066-5072. |
| MLA | Ma, Yan,et al."An Excellent Fluorescent Dye with a Twistable Aromatic Chain and Its Axially Chiral Crystals".JOURNAL OF PHYSICAL CHEMISTRY A 113.17(2009):5066-5072. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。