作者:Quanguo Wang、Yubin Ding、Weihong Zhu、Yongshu Xie
DOI:10.1007/s11458-010-0105-9
日期:2010.6
A supramolecular fluorescent sensor of F− based on intermolecular energy transfer is described. The maximum absorption wavelength of a pyrrolic compound 1 is 472 nm, which is coincident with the emission wavelength of a dipyridylamine-anthracene compound 2. In the CH2Cl2 solution of 1 and 2, the fluorescence of 2 was quenched because of the presence of intermolecular energy transfer from 2 to 1. When F− was added to this solution, the absorption maximum wavelength of 1 shifted from 472 to 594 nm due to a deprotonation process. Simultaneously, the fluorescence of 2 was recovered because of the interruption of the intermolecular energy transfer. Based on these observations, the combination of 1 and 2 can be regarded as a novel supramolecular fluorescence enhancing F− probe.
本文描述了一种基于分子间能量转移的 F- 超分子荧光传感器。吡咯化合物 1 的最大吸收波长为 472 nm,与二吡啶基胺-蒽化合物 2 的发射波长相吻合。在 1 和 2 的 CH2Cl2 溶液中,由于存在从 2 到 1 的分子间能量转移,2 的荧光被淬灭。当向该溶液中加入 F- 时,由于去质子化过程,1 的吸收最大波长从 472 纳米转移到 594 纳米。同时,由于分子间能量转移的中断,2 的荧光也恢复了。基于这些观察结果,1 和 2 的组合可被视为一种新型的超分子荧光增强 F- 探针。