Synthesis and characterization of a fully aromatic polyazomethine with rotaxane architecture

Abstract

This paper reports the preparation and characterization of a new aromatic polyazomethine with rotaxane architecture. The complex of β-cyclodextrin and 1,4-phenylenediamine was treated with N-n-butyl-3,6-diformylcarbazole, which is large enough to prevent dethreading. The polycondensation reaction was performed in N,N-dimethylformamide leading to polyazomethine soluble in polar solvents. Measurements made by gel permeation chromatography of the dimethylformamide-soluble (DMF) soluble polyazomethine show the presence of high molecular weight material. The structure and thermal properties of the resulting polymer were characterized by IR, 1 H NMR, TGA and DSC techniques.

Synthesis and Optoelectronic Properties of Nonpolar Polyrotaxane Insulated Molecular Wires with High Solubility in Organic Solvents

“…Inclusion complex formation is favored by hydrophobic interactions and the polymerization is usually carried out in water. [19] We have prepared polyrotaxane IMWs by aqueous Suzuki polycondensation of diboronic acids with diiodides. The chemistry works most efficiently when both monomers are soluble in the basic aqueous reaction media; diboronic acids are naturally soluble under these conditions but the aryl iodide component needs watersolubilizing groups such as carboxylates or sulfonates.…”

Synthesis and characterization of new phenanthrolinetriether copolymers with rotaxane architecture

“…To our best knowledge a phenanthroline triether copolymer having rotaxane architecture in every structural unit has not been reported prior to this work. Moreover, there have been only a few reports on this type of polyrotaxane with other chemical structures [8][9][10][11].…”

Electrically insulated molecular wires

“…The supramolecular aggregates are nanometer-sized molecular wires having ~1.5 nm in diameter (equal with the outer diameter of β-CD) ( Figure 5) [64]. All rotaxane polyimines are more hygroscopic and soluble in polar solvents in comparison with the polymers without rotaxane structure [58][59][60][61][62][63][64]. Figure 5 > …”