Construction of Polymeric δ-Graph: A Doubly Fused Tricyclic Topology
- 8 April 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (17), 6266-6270
- https://doi.org/10.1021/ja042198j
Abstract
A doubly fused tricyclic polymer architecture, corresponding to a δ-graph, has been constructed effectively through metathesis polymer cyclization (MPC) of an 8-shaped dicyclic polymer precursor having two allyl groups placed at opposite positions of the two rings of the 8-shaped structure. The 8-shaped polymer precursor has been obtained through the covalent conversion of an electrostatic self-assembly (composed of two units of the linear poly(tetrahydrofuran)s, poly(THF)s, having pyrrolidinium salt end groups and having a pendant allyl group at the middle of the chain, carrying a tetrafunctional carboxylate counteranion) by the heating treatment under appropriate dilution to cause the ring-opening reaction of pyrrolidinium salt groups by carboxylate anions.Keywords
This publication has 29 references indexed in Scilit:
- Designing Loop and Branch Polymer Topology with Cationic Star Telechelics through Effective Selection of Mono- and Difunctional CounteranionsMacromolecules, 2004
- Borromean Rings: A One-Pot SynthesisAngewandte Chemie International Edition, 2004
- Antigen Bias in T Cell Cross-PrimingScience, 2004
- A Molecular ElevatorScience, 2004
- Earthquake nucleation by transient deformations caused by the M = 7.9 Denali, Alaska, earthquakeNature, 2004
- Synthesis of polymeric topological isomers through electrostatic self‐assembly and covalent fixation with telechelic poly(THF) having cyclic ammonium salt groupsPolymer International, 2003
- DNA in a material worldNature, 2003
- Topological polymer chemistryProgress in Polymer Science, 2002
- Designing an “A-Ring-with-Branches” Polymer Topology by Electrostatic Self-Assembly and Covalent Fixation with Interiorly Functionalized Telechelics Having Cyclic Ammonium GroupsMacromolecular Rapid Communications, 2001
- Bis(triflate ester)s Having an Additional Functional Group: Initiators for the Preparation of α,ω,kentro-Telechelic Poly(THF)sMacromolecules, 2000