Stimuli-Responsive Reversible Assembly of 2D and 3D Metallosupramolecular Architectures
Stimuli-Responsive Reversible Assembly of 2D and 3D Metallosupramolecular Architectures
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DOI：
10.1021/ja907297z
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发表时间：
2009-11-18
影响因子：
15
通讯作者：
Slawin, Alexandra M. Z.
中科院分区：
文献类型：
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作者：
Lusby, Paul J.;Mueller, Peter;Slawin, Alexandra M. Z.
相互转换的铂配位模式的发现，揭示和掩盖顺式配位基团后，分别加入酸和碱，已被利用，以促进刺激响应组装和拆卸的两个二维和三维的金属超分子结构。用酸沿着与ditopic和tritopic供体配体一起处理binclear铂络合物，分别以良好至高产率产生分子正方形和三棱柱。这些复合物被明确地确定使用电喷雾质谱，H-1 NMR光谱，和X-射线晶体学。这两个组件都可以简单地通过碱处理分解成它们的组成部分，并且棱镜可以通过交替添加酸和碱在组装和分解状态之间循环。
The discovery of interconvertible platinum coordination modes, which reveals and masks cis coordinating groups upon addition of acid and base, respectively, has been exploited to facilitate stimuli-responsive assembly and disassembly of both two- and three-dimensional metallosupramolecular architectures. Treatment of a binclear platinum complex with acid along with ditopic and tritopic donor ligands generated a molecular square and a trigonal prism, respectively, in good to high yield. These complexes were unambiguously identified using electrospray mass spectrometry, H-1 NMR spectroscopy, and X-ray crystallography. Both assemblies can be disassembled into their constituent parts simply by treatment with base, and the prism can be cycled between the assembled and disassembled states by the alternate addition of acid and base.