A water reduction process performed by zinc metal under very mild conditions
作者:María J. Romero、Rosa Pedrido、Ana M. González-Noya、Miguel Martínez-Calvo、Guillermo Zaragoza、Manuel R. Bermejo
DOI:10.1039/c0cc00256a
日期:——
Water reduction can be electrochemically promoted by zinc under very mild conditions, as demonstrated by the formation of the complex [Zn(H2O)6][Zn3(L)3(μ3-O)], whose anion consists of a Zn3O4 cluster incorporating a μ3-oxo anion.
to detect chemical nerveagents. Herein, the o-phenylenediamine-linked dansyl chloride as a colorimetric and fluorescentprobe has been prepared to detect specific chemical nerveagent stimulants in the solution and vapor phase. The o-phenylenediamine unit serves as a detection site that can react with diethyl chlorophosphate (DCP) in a rapid response within 2 min. A satisfied relationship line was
化学神经毒剂是剧毒的有机磷化合物,容易获得,可被恐怖分子利用,威胁国土安全和人类安全。那些有机磷神经毒剂具有亲核能力,可以与乙酰胆碱酯酶发生反应,导致肌肉麻痹和人类死亡。因此,探索一种可靠、简便的化学神经毒剂检测方法具有重要意义。在此,制备了邻苯二胺连接的丹磺酰氯作为比色和荧光探针,用于检测溶液和气相中的特定化学神经毒剂兴奋剂。o _-苯二胺单元作为检测位点,可在2分钟内快速反应与氯磷酸二乙酯(DCP)反应。在0-90μM范围内荧光强度与DCP浓度之间获得了满意的关系线。在优化的条件下,我们进行了荧光滴定以测量检测限 (0.082 μM),荧光增强高达 18 倍。还进行了荧光滴定和 NMR 研究以探索检测机制,表明磷酸酯的形成导致 PET 过程中荧光强度的变化。最后,探针1涂有试纸用于肉眼检测DCP蒸气和溶液。我们期待该探针能够设计出小分子有机探针并应用于选择性检测化学神经毒剂。
A <i>N</i>-(2-Aminophenyl)-5-(dimethylamino)-1-naphthalenesulfonic Amide (Ds-DAB) Based Fluorescent Chemosensor for Peroxynitrite
作者:Ku-Kuei Lin、Shou-Cheng Wu、Kuang-Mei Hsu、Chen-Hsiung Hung、Wen-Feng Liaw、Yun-Ming Wang
DOI:10.1021/ol401932p
日期:2013.8.16
A dansyl derivative (Ds-DAB) was prepared and used as a fluorescent probe for peroxynitrite (ONOO-) detection. The results showed that the addition of peroxynitrite to the aqueous solution of Ds-DAB would result in obvious fluorescence enhancement. This probe is highly specific for peroxynitrite in aqueous solution, avoiding interference from other reactive oxygen species (ROS) and nitrogen species (RNS). The advantages of high selectivity, fast reaction rate, and peroxynitrite bioimaging render Ds-DAB suitable for peroxynitrite detection.
Neuroprotective effects of fluorophore-labelled manganese complexes: Determination of ROS production, mitochondrial membrane potential and confocal fluorescence microscopy studies in neuroblastoma cells
作者:Lara Rouco、Rebeca Alvariño、Amparo Alfonso、María J. Romero、Rosa Pedrido、Marcelino Maneiro