Self-assembly of a supramolecular hexagram and a supramolecular pentagram

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 () and Pingshan Wang ()
Additional contact information
Zhilong Jiang: College of Chemistry and Chemical Engineering, Central South University
Yiming Li: College of Chemistry and Chemical Engineering, Central South University
Ming Wang: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Bo Song: Materials Science, Engineering, and Commercialization Program, Texas State University
Kun Wang: Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center, University of Georgia
Mingyu Sun: Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center, University of Georgia
Die Liu: College of Chemistry and Chemical Engineering, Central South University
Xiaohong Li: College of Chemistry, Chemical Engineering and Materials Science, Soochow University
Jie Yuan: College of Chemistry and Chemical Engineering, Central South University
Mingzhao Chen: College of Chemistry and Chemical Engineering, Central South University
Yuan Guo: College of Chemistry and Chemical Engineering, Central South University
Xiaoyu Yang: College of Chemistry and Chemical Engineering, Central South University
Tong Zhang: Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center, University of Georgia
Charles N. Moorefield: University of Akron
George R. Newkome: University of Akron
Bingqian Xu: Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center, University of Georgia
Xiaopeng Li: Materials Science, Engineering, and Commercialization Program, Texas State University
Pingshan Wang: College of Chemistry and Chemical Engineering, Central South University

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract 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.

Date: 2017
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DOI: 10.1038/ncomms15476

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