Self-assembly of a supramolecular hexagram and a supramolecular pentagram

被引：0
作者：
Zhilong Jiang
Yiming Li
Ming Wang
Bo Song
Kun Wang
Mingyu Sun
Die Liu
Xiaohong Li
Jie Yuan
Mingzhao Chen
Yuan Guo
Xiaoyu Yang
Tong Zhang
Charles N. Moorefield
George R. Newkome
Bingqian Xu
Xiaopeng Li
Pingshan Wang
机构：
[1] College of Chemistry and Chemical Engineering,Department of Organic and Polymer Chemistry
[2] Central South University,Department of Chemistry and Biochemistry
[3] State Key Laboratory of Supramolecular Structure and Materials,Department of Chemistry
[4] College of Chemistry,Departments of Polymer Science and Chemistry
[5] Jilin University,undefined
[6] Materials Science,undefined
[7] Engineering,undefined
[8] and Commercialization Program,undefined
[9] Texas State University,undefined
[10] University of South Florida,undefined
[11] Single Molecule Study Laboratory,undefined
[12] College of Engineering and Nanoscale Science and Engineering Center,undefined
[13] University of Georgia,undefined
[14] College of Chemistry,undefined
[15] Chemical Engineering and Materials Science,undefined
[16] Soochow University,undefined
[17] University of Akron,undefined
来源：
Nature Communications | / 8卷
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摘要：
Five- and six-pointed star structures occur frequently in nature as flowers, snow-flakes, leaves and so on. These star-shaped patterns are also frequently used in both functional and artistic man-made architectures. Here following a stepwise synthesis and self-assembly approach, pentagonal and hexagonal metallosupramolecules possessing star-shaped motifs were prepared based on the careful design of metallo-organic ligands (MOLs). In the MOL design and preparation, robust ruthenium–terpyridyl complexes were employed to construct brominated metallo-organic intermediates, followed by a Suzuki coupling reaction to achieve the required ensemble. Ligand LA (VRu2+X, V=bisterpyridine, X=tetraterpyridine, Ru=Ruthenium) was initially used for the self-assembly of an anticipated hexagram upon reaction with Cd2+ or Fe2+; however, unexpected pentagonal structures were formed, that is, [Cd5LA5]30+ and [Fe5LA5]30+. In our redesign, LB [V(Ru2+X)2] was synthesized and treated with 60° V-shaped bisterpyridine (V) and Cd2+ to create hexagonal hexagram [Cd12V3LB3]36+ along with traces of the triangle [Cd3V3]6+. Finally, a pure supramolecular hexagram [Fe12V3LB3]36+ was successfully isolated in a high yield using Fe2+ with a higher assembly temperature.
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