The HETTAP approach: self-assembly and metal ion sensing of dumbbell-shaped molecules and clip molecules.
The HETTAP approach: self-assembly and metal ion sensing of dumbbell-shaped molecules and clip molecules.
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HETTAP 方法：哑铃形分子和夹子分子的自组装和金属离子传感。
DOI：
10.1021/ic060403l
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发表时间：
2006
影响因子：
4.6
通讯作者：
J. Bats
中科院分区：
文献类型：
--
作者：
M. Schmittel;Venkateshwarlu Kalsani;P. Mal;J. Bats
五配位三联吡啶-菲咯啉锌（II）配合物的主题，构思沿着HETTAP的概念，允许从各种bisterpyridines制备一组多组分超分子哑铃和剪辑组件。所有组件在350-400 nm处显示出显著的发光。通过X射线衍射分析，证实了哑铃型[Zn_（2（1b））_（2 b）]_（4+）的形成。哑铃形[Zn 2（1b）2（2b）]4+和夹子形[Zn 2（1d）（2b）]4+都允许监测Hg 2+离子，这是由于由Zn 2 + -> Hg 2+交换过程驱动的发射的高度选择性猝灭，而更应变的夹子形[Zn 2（1d）（2c）]4+不经历这种金属交换，并且不显示发光的猝灭。因此，这些组件表现出高度选择性的响应，仅仅由于超分子效应。
The pentacoordinated terpyridine-phenanthroline zinc(II) complex motif, conceived along the HETTAP concept, allows the preparation of a set of multicomponent supramolecular dumbbell and clip assemblies from various bisterpyridines. All assemblies show a notable luminescence at 350-400 nm. The formation of dumbbell [Zn2(1b)2(2b)]4+ is convincingly demonstrated from the X-ray crystal structure analysis. Both dumbbell [Zn2(1b)2(2b)]4+ and clip [Zn2(1d)(2b)]4+ allow the monitoring of Hg2+ ions due to highly selective quenching of the emission that is driven by a Zn2+ --> Hg2+ exchange process, while the more-strained clip [Zn2(1d)(2c)]4+ does not undergo such metal exchange and does not show quenching of the luminescence. Consequently, these assemblies exhibit a highly selective response due solely to supramolecular effects.