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A deep-red fluorescent molecular rotor based on donor-two-acceptor modular system for imaging mitochondrial viscosity

机译:基于供体 - 双能力模块化系统的深红色荧光分子转子,用于成像线粒体粘度

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A new donor-two-acceptor modular fluorescence rotor DpCy7 involving a phenolate donor unit and two benzothiazolium acceptor moieties was designed and synthesized. The DpCy7 underwent an internal charge transfer to form a Cy7-like longer conjugated system fluorochrome at a physiological pH. The probe exhibited a strong turn-on (8.5-fold) deep-red emission with a larger Stokes shift in glycerol aqueous solutions with restriction of rotation. Both the fluorescence intensity and fluorescence lifetime displayed the linear relationship of viscosity changes in the logarithmic plots. Furthermore, the HeLa cell imaging experiments of DpCy7 indicated that the rotor could be used to monitor the mitochondrial viscosity in living cells. This new type of deep-red fluorescence rotor provides a potential platform for determining viscosity at subcellular levels.
机译:设计并合成了涉及酚类供体单元和两种苯并噻唑鎓受体部分的新的供体 - 双 - 受体模块化荧光转子DPCy7。 DPCY7经历内部电荷转移,以在生理pH下形成Cy7样的更长的共轭系统荧光染料。探针表现出强烈的开启(8.5倍)深红发射,具有较大的甘油水溶液在具有旋转的甘油水溶液中的速度。荧光强度和荧光寿命均显示对数图中粘度变化的线性关系。此外,DPCY7的Hela细胞成像实验表明,转子可用于监测活细胞中的线粒体粘度。这种新型深红色荧光转子提供了一种用于在亚细胞水平下确定粘度的潜在平台。

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