Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 16, Pages 5908-5911Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja502490k
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Funding
- NSF [1212799]
- National Natural Science Foundation of China [21102129]
- Program for Changjiang Scholars and Innovative Research Team in Chinese University [IRT 1231]
- Special Funds for Key Innovation Team of Zhejiang Province [2010R50017]
- Public Welfare Technology and Application Program of Zhejiang Province [2010C31042]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1212799] Funding Source: National Science Foundation
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The formation of catenated systems can be simplified greatly if one or more rings are generated via self-assembly. Herein we exploit the orthogonality of coordination-driven self-assembly and crown-ether host-guest complexation to obtain a [4]molecular necklace and a [7]molecular necklace based on a well-developed recognition motif of 1,2-bis(pyridinium)ethane/dibenzo[24]crown-8. By adapting the bis(pyridinium) motif into the backbone of a donor building block, the resulting semirigid dipyridyl species can serve both as a structural element in the formation of metallacycles and as a site for subsequent host-guest chemistry. The pseudo-linear nature of the donor precursor lends itself to the formation of triangular and hexagonal central metallacycles based on the complementary acceptor unit used. This exemplary system organizes up to 18 molecules from three unique species in solution to afford a single supramolecular ensemble.
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