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Chiral eighteen-component three-dimensional supramolecular entities stabilized by the hydrogen bonding and coordination interactions |
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| Authors: | Shi-Gui Chen Gui-Tao Wang Yuguo Ma Xi-Kui Jiang |
| Affiliation: | a State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China b Shangqiu Technician College, 9 Guilin Lu, Shangqiu 476000, China c Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China |
| Abstract: | A new class of chiral eighteen-component three-dimensional supramolecular entities has been assembled in toluene and chloroform from twelve zinc porphyrin-appended 2-(ethylamino)- pyrimido[4,5-b][1,8]naphthyridin-4(3H)-one monomers and six chiral bipyridyl compounds. The heterocyclic segments form two C6-symmetric cyclic hexamers, which are stabilized by a well-established DDA-AAD hydrogen bonding motif, while the six chiral bispyridine ligands are coordinated to the corresponding zinc porphyrin units to give the two-layered architectures. The structures have been characterized by the 1H NMR, UV-vis and circular dichroism experiments, which also reveals that, when the concentration of the monomers is high enough, the chiral supramolecular entity can be formed exclusively. |
| Keywords: | Supramolecular chirality Hydrogen bonding Coordination interaction Porphyrin Bipyridyl |
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