Ratiometric fluorescent receptors for monosaccharides based on the intramolecular charge transfer in p-dialkylaminobenzanilides | |
Liu Li-Hong ; Zhang Han ; Zhang Xuan ; Jiang Yun-Bao ; Jiang YB(江云宝) | |
2005-05 | |
关键词 | dual fluorescence ratiometric receptor intramolecular charge transfer boronic acid monosaccharide |
英文摘要 | Two dual fluorescent receptors (1 and 2) for monosaccharides based on 4-dialkylaminobenzanilides (alkyl= methyl and n-butyl) containing boronic acid group at the amido aniline were synthesized and their spectral properties were investigated. These receptors exhibited dual fluorescence with the long-wavelength band displaying strong solvent-polarity dependence, indicating the occurrence of the excited-state intramolecular charge transfer (ICT). With increasing pH value in aqueous solutions, the hybridization of the boron atom changed from sp(2) to spa(3) inducing a decrease in the total fluorescence quantum yield. The experimental results indicated that the anionic form of the boronate group acted as an electron donor and the benzanilide-like charge transfer was promoted upon hybridization change. In the presence of monosaccharides, the boronic acid in 1 and 2 changed from neutral to anionic form. The intensity of the locally excited (LE) state emission decreased in the presence of sugars while a slight increase in the intensity at the charge transfer (CT) emission occurred. Based on the change in the CT to LE intensity ratios of 1 and 2 due to sugar binding, ratiometric fluorescent assays for monosaccharide sensing were established. |
语种 | 英语 |
出版者 | SCIENCE CHINA PRESS |
内容类型 | 期刊论文 |
源URL | [http://dx.doi.org/doi:10.1002/cjoc.200590421] ![]() |
专题 | 化学化工-已发表论文 |
推荐引用方式 GB/T 7714 | Liu Li-Hong,Zhang Han,Zhang Xuan,et al. Ratiometric fluorescent receptors for monosaccharides based on the intramolecular charge transfer in p-dialkylaminobenzanilides[J],2005. |
APA | Liu Li-Hong,Zhang Han,Zhang Xuan,Jiang Yun-Bao,&江云宝.(2005).Ratiometric fluorescent receptors for monosaccharides based on the intramolecular charge transfer in p-dialkylaminobenzanilides.. |
MLA | Liu Li-Hong,et al."Ratiometric fluorescent receptors for monosaccharides based on the intramolecular charge transfer in p-dialkylaminobenzanilides".(2005). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论