期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 47, 页码 17723-17726出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja409882k
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资金
- NSF [CHE-1151773, CHE-0747481]
- UC Riverside
- Direct For Mathematical & Physical Scien [0747481] Funding Source: National Science Foundation
- Division Of Chemistry [0747481] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1151773] Funding Source: National Science Foundation
Metal-selective self-assembly with rare-earth cations is possible with suitable rigid, symmetrical bis-tridentate ligands. Kinetically controlled formation is initially observed, with smaller cations preferentially incorporated. Over time, the more thermodynamically favorable complexes with larger metals are formed. This thermodynamic control is a cooperative supramolecular phenomenon and only occurs upon multiple-metal-based self-assembly: single-metal ML3 analogues do not show reversible selectivity. The selectivity is dependent on small variations in lanthanide ionic radius and occurs despite identical coordination-ligand coordination geometries and minor size differences in the rare-earth metals.
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