Phosphinine Lipids: A Successful Marriage between Electron-Acceptor and Self-Assembly Features
作者:Xiaoming He、Jian-Bin Lin、Wang Hay Kan、Thomas Baumgartner
DOI:10.1002/anie.201303729
日期:2013.8.19
A push in the right direction: An electron‐accepting organophosphorus system has been combined with self‐assembly features to create a strongly electron‐accepting liquid‐crystalline material (see picture). The stability and behavior of the self‐assembled liquid crystal could be controlled by adjusting weak intermolecular forces, such as hydrogen bonding and π–π interactions.
A Novel Heterocyclic Xanthene-Analogous pH Probe for Quantitative Monitoring of Cell Surface pH by Fluorescence Lifetime Imaging
作者:Xinfu Zhang、Xiaoxi Li、Yi Xiao、Shuyao Wu、Shulan Sun、Ze Hui Wang、Dingxuan Li
DOI:10.1055/a-2012-0232
日期:——
Rapidly capturing slight changes in cell surface pH is extremely important to evaluate the rapid diffusion of acidic metabolites into the extracellular environment caused by disease and physiological pH fluctuations of cells. In this work, we designed a membrane-targeted pHprobe, Mem-COC18 , based on a novel heterocyclic xanthene-analogous backbone. Mem-COC18 shows specific and stable staining ability
快速捕捉细胞表面 pH 值的微小变化对于评估酸性代谢物快速扩散到由疾病和细胞生理 pH 值波动引起的细胞外环境非常重要。在这项工作中,我们设计了一种基于新型杂环呫吨类主链的膜靶向 pH 探针Mem-C O C 18 。 Mem-C O C 18 对膜具有特异性和稳定的染色能力。重要的是, Mem-C O C 18 的荧光寿命对膜内酸度高度敏感,这有利于通过荧光寿命成像量化 pH 值。使用Mem-C OC 18 ,我们在糖酵解过程中记录了人宫颈癌细胞 (Hela) 表面 0.61 单位的 pH 变化。此外,我们观察到质膜具有强大的 pH 调节机制,即膜内 pH 波动范围 (5.32–6.85) 远小于细胞外环境 (4.00–8.00) 的变化。因此,我们展示了一种 pH 探针,用于量化细胞膜内的小 pH 波动,值得进一步评估生物学应用。
The effect of heteroatom conformation on optoelectronic properties of cyclopentadithiophene derivatives