|
| 基于β-环糊精包合的激基缔合荧光 |
| Excimer emission based on β-cyclodextrin inclusion complex |
| 投稿时间：2024-01-15 修订日期：2024-03-19 |
| DOI： |
| 中文关键词: 蒽 芘 金刚烷 β-环糊精 激基缔合物 |
| 英文关键词: anthracene pyrene adamantine β-cyclodextrin excimer |
| 基金项目: |
|
| 摘要点击次数: 329 |
| 全文下载次数: 0 |
| 中文摘要: |
| 激基缔合荧光具有发射谱带宽、斯托克斯位移大的特点，在传感、检测、成像及照明等方面具有广泛应用。本文提出了1个基于β-环糊精（β-CD）包合作用构建激基缔合发光体的新方法。通过多环芳醛（蒽醛和芘醛）与金刚烷胺缩合合成了两个席夫碱（ANDA和PYDA），二者都显示激基缔合增强的聚集诱导发光。席夫碱的金刚烷基与β-CD的疏水空腔高度匹配，与β-CD形成包合物后荧光性质会发生明显变化。在β-CD水溶液中，ANDA的发射光谱与β-CD浓度密切相关，当ANDA:β-CD为1:2时观察到明显的激基缔合发射。与ANDA不同，PYDA在各种浓度的β-CD水溶液中都发射激基缔合荧光，但过量的β-CD使荧光强度有所减弱。在固态，ANDA和PYDA几乎没有荧光，与β-CD形成包合物后，二者都显示强激基缔合发射。总之，与β-CD形成包合物更有利于发射激基缔合荧光。 |
| 英文摘要: |
| The excimer emission showing broadband emission and huge Stokes shift has wide applications in sensing, detecting, imaging, lighting, et al. In this work, a new strategy based on the formation of inclusion complexes with β-CD was proposed for the construction of excimer emission luminophores. Two Schiff bases were synthesized by conjugating anthraldehyde/pyrenealdehyde with 1-amantadine. Both of them showed excimer-enhanced aggregaton emissiom. The adamantyl group perfectly matched with the hydrophobic cavity of β-CD. The emission properties obviously changed when forming the inclusion complex of the obtained Schiff bases with β-CD. In H2O, the emission of ANAD was dependent on the concentrations of β-CD. The excimer emission was observed only when ANDA:β-CD was 1:2. Being different from ANAD，PYAD always showed the excimer emission under any circumstances, but the emission intensity was weakened by the excess β-CD. ANDA and PYDA in solid state exhibited non-fluorescence. When included by β-CD, both of them exhibited intense excimer emission. In short, the formation of inclusion complex with β-CD was favorable to excimer emission. |
|
View Fulltext
查看/发表评论 下载PDF阅读器 |
| 关闭 |
