【摘 要】
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The construction of interlocked topologies by metal-cation-template methods has been extensively explored.However,construction of these species using template-free chemical self-assembly methods is hard to rationally achieve due to the inherent unpredicta
【机 构】
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Department of Chemistry,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Stat
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The construction of interlocked topologies by metal-cation-template methods has been extensively explored.However,construction of these species using template-free chemical self-assembly methods is hard to rationally achieve due to the inherent unpredictability of self-assembly processes.In this work,a strategy to construct interlocked[2]catenanes by coordination-driven template-free self-assembly is demonstrated,whereby combining rigid bidentate ligands with large conjugated-π area units and building blocks with appropriate lengths facilitated construction of interlocked[2]catenane compounds.Two rigid bidentate ligands,L1 and L2,were cho-sen to self-assemble with three dinuclear building blocks B1,B2 and B3.Ultimately,the successful construction of three[2]catenanes demonstrated the validity of the strategy.Although[2]catenanes are the simplest of all interlocked topologies,this motif is the basis for constructing more intricate topologies.This successful strategy may therefore lead to construction of other,more intricate topolo-gies in the future.
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