Vertical Assembly of Giant Double‐ and Triple‐Decker Spoked Wheel Supramolecular Structures

The double‐ or triple‐decker 3D metallo‐hexagons were obtained by self‐assembly of multitopic tris‐terpyridines with Cd2+ ions in near‐quantitative yield. Comprising up to 72 ionic pairs, the multiple spoked wheels display characteristic reversible gelation properties under thermodynamic conditions....

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2018-10, Vol.57 (43), p.14116-14120
Main Authors: Liu, Die, Chen, Mingzhao, Li, Yiming, Shen, Yixian, Huang, Jian, Yang, Xiaoyu, Jiang, Zhilong, Li, Xiaopeng, Newkome, George R., Wang, Pingshan
Format: Article
Language:English
Subjects:
Assembly
Cadmium
coordination
Gelation
Hexagons
Ionic mobility
Ions
Mass spectrometry
Mass spectroscopy
Metallography
molecular spoked wheels
NMR
Nuclear magnetic resonance
self-assembly
terpyridine
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Summary:The double‐ or triple‐decker 3D metallo‐hexagons were obtained by self‐assembly of multitopic tris‐terpyridines with Cd2+ ions in near‐quantitative yield. Comprising up to 72 ionic pairs, the multiple spoked wheels display characteristic reversible gelation properties under thermodynamic conditions. The supramolecular metallo‐nanoarchitectures were characterized by 1H NMR, 2D NMR (COSY and NOESY), and diffusion‐ordered spectroscopy (DOSY) and HR‐ESI‐MS, traveling‐wave ion mobility mass spectrometry (TWIM‐MS), TEM, and AFM. For the first time, the self‐assembly of 45 units at once was demonstrated to yield exceptional giant triple‐decker hexagons of up to circa 42 000 Da. Big wheel keep on turning: Giant triple‐decker 3D metallohexagons were assembled from triple tris‐terpyridines and Cd2+ ions. Self‐assembly of 45 units at once yields exceptional metalloorganic hexagons with a molecular weight of circa 42 000 Da. Comprising up to 72 ion pairs, the molecular spoked wheels undergo characteristic reversible gelation under thermodynamic conditions.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201809819