Pseudocryptand-Type [2]Pseudorotaxanes Based on Bis(meta-phenylene)-32-Crown-10 Derivatives and Paraquats with Remarkably Improved Association Constants
2011
The first dual component pseudocryptand-type [2]pseudorotaxanes were designed and prepared via the self-assembly of synthetically easily accessible bis(meta-phenylene)-32-crown-10 pyridyl, quinolyl, and naphthyridyl derivatives with paraquat. The formation of the pseudocryptand structures in the complexes remarkably improved the association constant by forming the third pseudobridge via H-bonding with the guest and π-stacking of the heterocyclic units.
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