A facile approach toward multicomponent supramolecular structures: selective self-assembly via charge separation.

A facile approach toward multicomponent supramolecular structures: selective self-assembly via charge separation.
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DOI:
10.1021/ja106251f
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发表时间:
2010-12-01
影响因子:
15
通讯作者:
Stang PJ
Stang PJ
中科院分区:
化学1区
文献类型:
--
作者:
Zheng YR;Zhao Z;Wang M;Ghosh K;Pollock JB;Cook TR;Stang PJ

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报道了一种构建多组分二维和三维金属超分子的新方法。简单地通过将羧酸酯和吡啶基配体与顺式Pt(PEt 3)2(OTf)2以适当的比例混合,发生配位驱动的自组装,允许通过金属中心上的电荷分离选择性地产生离散的多组分结构。利用这种方法,在温和的条件下制备了各种二维矩形和三维棱柱。此外,多组分自组装也可以通过超分子到超分子的转化来实现。通过31 P和1H多核NMR光谱、电喷雾电离质谱(ESI-MS)和脉冲场梯度自旋回波(PGSE)NMR技术以及计算机模拟对产物进行了表征。
A novel approach towards the construction of multicomponent two-dimensional (2-D) and three-dimensional (3-D) metallosupramolecules is reported. Simply by mixing carboxylate and pyridyl ligands with cis-Pt(PEt3)2(OTf)2 in a proper ratio, coordination-driven self-assembly occurs, allowing for selective generation of discrete multicomponent structures via charge separation on the metal centers. Using this method, a variety of 2-D rectangles and 3-D prisms were prepared under mild conditions. Moreover, multicomponent self-assembly can also be achieved by supramolecule-to-supramolecule transformations. The products were characterized by 31P and 1H multinuclear NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and pulsed-field-gradient spin echo (PGSE) NMR techniques together with computational simulations.
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