2013 Fiscal Year Final Research Report
Functionalization of crystalline channels with multiple recognition sites
| Project/Area Number |
23655117
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional materials chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 多孔性結晶 / 自己集合 / 超分子 / 大環状金属錯体 / ホスト・ゲスト化学 / X線構造解析 / 分子認識 |
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| Research Abstract |
It was found in this study that trinuclear Pd complexes of a macrocyclic N6-type ligand simultaneously form four kinds of conformational and stereo isomers in solution and that self-assembly of these isomers results in crystalline nanochannel structure of ca. 2 nm diameter. In the channel, five enantio-paired pockets and various types of hydrogen bonding sites are arranged. In the guest adsorption experiments, a single-crystal was soaked in a guest solution for a given time, and then the position and adsorption patterns of the guest was determined by single-crystal X-ray structural analysis. This method has revealed the adsorption positions of many types of aromatic compounds, metal catalysts, and bio-related compounds, which allowed adsorption mapping. Moreover, simultaneous site-selective adsorption of different multiple guests has been achieved and further developed to multicomponent intermolecular reactions in the channel.
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