...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A chromo-fluorogenic probe for detecting water traces in aprotic solvents based on C-2-symmetry dianthrimide-hydroxide complexes: experimental and theoretical studies
【24h】

A chromo-fluorogenic probe for detecting water traces in aprotic solvents based on C-2-symmetry dianthrimide-hydroxide complexes: experimental and theoretical studies

机译：基于C-2对称氢氧化氧化物复合物的非质子溶剂检测水痕量的铬荧光探针：实验与理论研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A C-2-symmetry dianthrimide based probe (D) and its hydroxide complex (D-OH) are reported as a chromo-fluorogenic sensor for rapid and sensitive detection of trace amounts of water in polar aprotic solvents. Based on intramolecular charge transfer in the excited state, the pink-coloured probe binds with the hydroxide ions to induce a colorimetric response of the resulting complex (D-OH), green in colour. The hydroxide based complex is used as a H2O or moisture sensor, tested in DMF and DCM, due to its high instability in moisture-containing organic solvents and paper materials/fabrics. The probe exhibits higher sensitivity towards pure H2O in DMSO with the LOD measured at 0.0067% v/v, perhaps even lower, in DMF (LOD = 0.100% v/v) and DCM (LOD = 0.013% v/v). The dissociation of OH- from D in the presence of H2O is responsible for the colorimetric and fluorometric responses. The litmus test paper strips prepared by adsorbing or coating them with the D-OH complex in DMSO could not be entirely achieved in an open system, due to the highly unstable state of the complex in the presence of water traces or the atmospheric moisture accumulated in the paper materials. The complex D-OH is also highly suspected to compete for adsorbed water in silica gel crystals in desiccators, due to its high affinity towards water molecules. The experimental studies were complemented by theoretical calculations using the Spartan'14 software package, and the computed data are in good agreement with the spectral data.
机译：报道了一种基于C-2-对称二聚氰菊酯的探针（D）及其氢氧化物（D-OH）作为一种色荧光传感器，用于快速、灵敏地检测极性非质子溶剂中的痕量水。基于激发态下的分子内电荷转移，粉红色探针与氢氧化物离子结合，以诱导产生绿色络合物（D-OH）的比色反应。基于氢氧化物的复合物用作H2O或水分传感器，在DMF和DCM中进行测试，因为其在含水有机溶剂和纸张材料/织物中高度不稳定性。在DMF（LOD=0.100%v/v）和DCM（LOD=0.013%v/v）中，探针对DMSO中的纯H2O表现出更高的灵敏度，在0.0067%v/v下测量的LOD甚至更低。在H2O存在下，OH-与D的解离是比色反应和荧光反应的原因。通过在二甲基亚砜中吸附或涂覆D-OH络合物制备的石蕊试纸条无法在开放系统中完全实现，因为络合物在存在微量水或纸张材料中累积的大气水分的情况下处于高度不稳定状态。由于其对水分子的高度亲和力，人们高度怀疑复合物D-OH在干燥器中与硅胶晶体中的吸附水竞争。实验研究通过使用Spartan'14软件包进行理论计算进行补充，计算数据与光谱数据吻合良好。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号