title: π-Conjugated molecules covered by permethylated cyclodextrins.
abstract: Insulated π-conjugated molecules, in which the π-conjugated compounds are covered by a cyclic protective sheath, have attracted considerable attention because of their potential applicability in next-generation mono-molecular electronic devices. We have developed new methods of synthesizing insulated π-conjugated molecules involving the self-inclusion of rotaxane precursors linking π-conjugated units as a guest and permethylated cyclodextrin (PMCD) as a macrocyclic host. The insulated π-conjugated molecules thus formed are highly soluble in organic solvents and display photoluminescence efficiency. This paper also highlights a new method for synthesizing insulated molecular wire (IMW) through the polymerization of insulated π-conjugated molecules as monomers. The IMWs thus formed have a high covering ratio, rigidity, and showed high charge mobility in the solid state; further, they are readily soluble in a variety of organic solvents. In this account, the synthetic methodologies and characteristic of insulated π-conjugated molecules and IMWs are discussed.
authors: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan. terao@scl.kyoto-u.ac.jp
authors: Jun
authors: J
authors: Terao
mesh_terms: D003505:Cyclodextrins / Q000138:chemical synthesis* / Q000737:chemistry; D008745:Methylation; D008958:Models, Molecular; D015394:Molecular Structure
chemical_list: D003505:Cyclodextrins