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Constructing a Macromolecular K3,3 Graph through Electrostatic Self-Assembly and Covalent Fixation with a Dendritic Polymer Precursor
- Suzuki, Takuya, Yamamoto, Takuya, Tezuka, Yasuyuki
- Journal of the American Chemical Society 2014 v.136 no.28 pp. 10148-10155
- hydrodynamics, isomers, polymers
- A triply fused tetracyclic macromolecular K₃,₃ graph has been constructed through electrostatic self-assembly of a uniformly sized dendritic polymer precursor having six cyclic ammonium salt end groups carrying two units of a trifunctional carboxylate counteranions, and subsequent covalent conversion by the ring-opening reaction of cyclic ammonium salt groups at an elevated temperature under dilution. The K₃,₃ graph product was isolated from the two constitutional isomers by means of a recycling SEC technique, as the hydrodynamic volume of the triply fused tetracyclic K₃,₃ product is remarkably contracted in comparison with another isomer having a ladder form in solution.