期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 29, 页码 10499-10507出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja505414x
关键词
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资金
- Research Enhancement Program of Texas State University
- Welch Foundation [AI-0045]
- NSFC/China [21102135, 21132005, 91027005, 21305098]
- SMSTC [13JC1402200]
- SRFDP [20123201120014]
Using a series of tritopic 2,2':6',2 ''-terpyridine (tpy) ligands constructed on adamantane, three discrete 3D metallo-supra-molecular architectures were assembled, i.e., trigonal bipyramidal, tetrahedron, and cube. The self-assembly used tritopic ligands as corner directing units and metal ions as glue units at the edge. The angles of the linkers between adamantane and tpy head play a critical role in guiding the assembled structures, which have the general formula of M3nL2n, where M denotes metal ion and L denotes ligand. All complexes were fully characterized by H-1, C-13 NMR, diffusion-ordered NMR spectroscopy, ESI-MS, and traveling-wave ion mobility-mass spectrometry. The binary mixtures of LA and LC or LB and LC underwent a self-sorting process that led to the self-assembly of discrete 3D structures. The self-sorting behavior is solely based on the angles precoded within the arm of tritopic ligands. Moreover, kinetic study of preassembled cube and tetrahedron demonstrated a slow ligand exchange process toward a statistical mixture of hetero tetrahedrons with LA and LB.
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