Rational Perturbation of the Fluorescence Quantum Yield in Emission-Tunable and Predictable Fluorophores (Seoul-Fluors) by a Facile Synthetic Method Involving CH Activation
作者:Eun Joung Choi、Eunha Kim、Youngjun Lee、Ala Jo、Seung Bum Park
DOI:10.1002/anie.201308826
日期:2014.1.27
subsequent palladium‐mediated CH activation. We also showed that the quantum yields of Seoul‐Fluors are controlled by the electronic nature of the substituents, which influences the extent of photoinduced electron transfer. On the basis of this understanding, we demonstrated our design strategy by the development of a Seoul‐Fluor‐based chemosensor 20 for reactive oxygen species that was not accessible
荧光成像能够对活细胞中的功能和分子识别事件进行独特而灵敏的观察。然而,由于缺乏设计策略和生物传感器合成的困难,只有有限范围的生物过程受到成像。在此,我们报告了一种通过造币轻松合成具有各种 R 1和 R 2取代基的发射可调和可预测的首尔氟,9-芳基-1,2-二氢吡咯并[3,4- b ]吲哚嗪-3-酮-金属催化的分子内 1,3-偶极环加成和随后的钯介导的 C H 激活。我们还表明,Seoul-Fluors 的量子产率受取代基的电子性质控制,这会影响光致电子转移的程度。在这种理解的基础上,我们通过开发一种基于首尔氟的化学传感器20来展示我们的设计策略,用于检测以前的合成路线无法获得的活性氧物质。