A general purpose reporter for cations: absorption, fluorescence and electrochemical sensing of zinc(ii)
作者:Andrew C. Benniston、Anthony Harriman、Donald J. Lawrie、Annabelle Mayeux、Karen Rafferty、Owen D. Russell
DOI:10.1039/b313413j
日期:——
sensor has been synthesized that comprises a pyrene moiety tethered to a [2,2′:6′,2″]-terpyridyl ligand via a diethynylated thiophene linker. This multicomponent supermolecule is highly emissive in solution but addition of Zn2+ cations results in a drastic decrease in the fluorescence yield. Complexation between Zn2+ cations and the vacant terpyridyl ligand has been confirmed by NMR spectroscopy and
已经合成了一种荧光传感器,该传感器包括与[2,2':6',2'']-吡啶基相连的a部分 配体 通过二乙酰化噻吩链接器。该多组分超分子在溶液中具有高发射率,但添加了Zn 2+ 阳离子导致荧光产量急剧下降。Zn 2+之间的络合 阳离子 和空缺 联吡啶 配体 已被确认 核磁共振光谱 并通过电喷雾 质谱。这质谱仪 结果为1:1和1:2(金属: 配体)溶液中的配合物。通过吸收光谱的明显变化,荧光光谱中长波带的出现以及循环伏安法。在...的基础上紫外线可见分光光度滴定,整体结合日志常数β 1 ≈5.1和日志β 2 ≈9.9推导为1:1和1:2络合物,分别在乙腈解决方案。提到了该系统作为阳离子物质的通用化学传感器的可能应用。