期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 38, 页码 10164-10168出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201402951
关键词
host-guest systems; metal-organic frameworks; microporous materials; supramolecular chemistry
资金
- Australian Research Council
- World Scholar Award
Covalent post-synthetic modification is a versatile method for gaining high-level synthetic control over functionality within porous metal-organic frameworks and for generating new materials not accessible through one-step framework syntheses. Here we apply this topotactic synthetic approach to a porous spin crossover framework and show through detailed comparison of the structures and properties of the as-synthesised and covalently modified phases that the modification reaction proceeds quantitatively by a thermally activated single-crystal-to-single-crystal transformation to yield a material with lowered spin-switching temperature, decreased lattice cooperativity, and altered color. Structure-function relationships to emerge from this comparison show that the approach provides a new route for tuning spin crossover through control over both outer-sphere and steric interactions.
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