Synthesis of Organic-Soluble Conjugated Polyrotaxanes by Polymerization of Linked Rotaxanes

摘要

Insulated molecular wires (IMWs) have attracted considerable attention because of their potential applicability as next-generation monomolecular electronic devices.Our objective is to develop organic materials for use in nanoscale molecular electronics by interconnection of nanoelectrodes via a chemical reaction with high reproducibility. In order to accomplish this, we have attempted to synthesize IMWs with molecular structures that have the following ideal features; (1) a π-conjugated polymer chain with a high degree of insulation; (2) a rigid polymer chain with high linearity; (3) high solubility in organic solvents essential for simple liquid solution processes; and (4) high charge mobility. Extensive research on the use of cyclodextrin (CD) for insulating π-conjugated polymer chains has been carried out because of its commercial availability and its unique ability to form inclusion complexes with organic molecules viahydrophilic-hydrophobic interactions.