A Cation-Tethered Flowable Polymeric Interface for Enabling Stable Deposition of Metallic Lithium
作者:Zhuojun Huang、Snehashis Choudhury、Huaxin Gong、Yi Cui、Zhenan Bao
DOI:10.1021/jacs.0c09649
日期:2020.12.23
complexity of electrochemistry at the electrode-electrolyte interfaces that impacts the Coulombic efficiency, operational rate capability, and lifetime. Specifically, in energy-dense lithium metal batteries, the charging/discharging process results in structural heterogeneities of the metal anode, leading to battery failure by short-circuit and capacityfade. In this work, we take advantage of organic cations
A side-chain engineering strategy can dramatically improve dye delivery by fine-tuning the adsorption and desorption abilities of the transmembrane process, enabling ultralow loading bioimaging and deep tissue penetration.
Many inflammatory processes are associated with an increase in the production of reactive
oxygen species (ROS). Chemical probes that specifically detect ROS are potentially useful tools for
the early diagnosis of inflammatory diseases as well as cancer. Herein we have developed a library of
coumarin hybrids by condensation of various heterocyclic quaternary salts to a 7-hydroxycoumarin
scaffold. From our library we identified one benzothiazole-coumarin hybrid as a red-fluorescent
compound with emission maxima around 620 nm and a strong fluorogenic response. Furthermore, we
proved that this scaffold is suitable for the preparation of activatable probes, such as by modification with a boronate
group for selective sensing of hydrogen peroxide (H2O2). In vitro assays confirmed the reactivity and subsequent emission
of our probe upon incubation with H2O2 with good selectivity over different ROS and reactive nitrogen species (RNS) as
well as minimal toxicity in cells. Finally cell imaging experiments were performed in murine macrophages and validated
the utility of the activatable probe for the detection of H2O2 in living cells.
Real-time imaging of cancer cell generations and monitoring tumor growth using a nucleus-targeted red fluorescent probe
作者:Lei Wang、Qi Xia、Ruiyuan Liu、Jinqing Qu
DOI:10.1039/c8tb00101d
日期:——
tumor growth monitoring. PTB exhibits a large Stokes shift (∼110 nm), far-red emission (625 nm), and a 73.8-fold increase in fluorescence upon binding with DNA. Compared to currently used nucleus stains, PTB also displays low cytotoxicity and good photostability and biocompatibility. More importantly, the results of in vitro studies reveal that PTB can be tracked in stained HepG-2 cancercells for up to