State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
Org Lett. 2018 Jan 19;20(2):365-368. doi: 10.1021/acs.orglett.7b03612. Epub 2018 Jan 9.
A novel supramolecular Föster resonance energy transfer (FRET) system was fabricated by utilizing rhodamine B (RB) functionalized pillar[5]arene (EtP5-RB) and cyano-modified boron dipyrromethene (BDP-CN) based on their host-guest recognition at 5.0 × 10 M, which could be turned "on" and "off" by adding trifluoroacetic acid (TFA) and triethylamine (TEA), respectively. At a higher concentration (1.0 × 10 M) in acetone, EtP5-RB self-assembled into vesicles while EtP5-RBH self-assembled into nanoribbons. After the addition of BDP-CN, both EtP5-RB⊃BDP-CN and EtP5-RBH⊃BDP-CN self-assembled into nanoparticles, which caused the fluorescence of the host-guest complexes to be quenched.
一种新型超分子福斯特共振能量转移（FRET）系统是通过利用罗丹明 B（RB）功能化的柱[5]芳烃（EtP5-RB）和氰基修饰的硼二吡咯甲川（BDP-CN）基于它们在 5.0×10 M 的主客体识别来制备的，分别可以通过添加三氟乙酸（TFA）和三乙胺（TEA）来开启和关闭。在更高浓度（1.0×10 M）的丙酮中，EtP5-RB 自组装成囊泡，而 EtP5-RBH 自组装成纳米带。加入 BDP-CN 后，EtP5-RB⊃BDP-CN 和 EtP5-RBH⊃BDP-CN 都自组装成纳米颗粒，导致主体-客体配合物的荧光被猝灭。
