pH-Switched Near-Infrared Fluorescent Strategy for Ratiometric Detection of ONOO– in Lysosomes and Precise Imaging of Oxidative Stress in Rheumatoid Arthritis
Two novel cyanineâfullerene dyads have been synthesized by means of the Prato reaction from the corresponding cyanine-aldehyde, N-methylglycine and C60. As well as a thorough characterization using MS-TOF, 1H-NMR, 13C-NMR and elemental analysis, the optical and electrochemical properties of these two dyads were investigated. The fluorescence of the cyanineâfullerene dyads was quenched efficiently as compared to the pristine cyanine, which we have attributed to photo-induced electron transfer from the cyanine to C60. The redox potentials obtained by cyclic voltammetry provide evidence that this electron transfer is energetically favorable. Single and double layer photovoltaic devices were fabricated to evaluate the photovoltaic properties of the dyad. The energetic conversion efficiency of the double layer device exceeds 0.1% under 3.1 mW cmâ2 white light irradiation. The results show that cyanineâfullerene dyads are promising materials for photovoltaic devices.
developed a general strategy for constructing photoactivatable probes by introducing a universaltag SO on fluorescent molecules. This strategy is applicable to most of the commercial fluorophores with various skeletal structures. We successfully applied these photoactivatable probes for time-lapse super-resolution tracking in living cells and super-resolution imaging of microtubules in fixed neurons.
我们开发了一种通过在荧光分子上引入通用标签 SO 来构建可光激活探针的通用策略。该策略适用于大多数具有各种骨架结构的商业荧光团。我们成功地将这些光敏探针应用于活细胞中的延时超分辨率跟踪和固定神经元微管的超分辨率成像。