Left‐handed helical polymer resin nanotubes prepared by using N‐palmitoyl glucosamine

Abstract

Although the preparation of single-handed helical inorganic and hybrid organic-inorganic nanotubes is well developed, approaches to the formation of single-handed organopolymeric nanotubes are limited. Here, left-handed helical m-phenylenediamine-formaldehyde resin and 3-aminophenol-formaldehyde resin nanotubes were prepared by using N-palmitoyl glucosamine that can self-assemble into left-handed twisted nanoribbons in a mixture of methanol and water. In the reaction mixture, the helical pitch of the nanoribbons decreased with increasing reaction time. The resin nanotubes were obtained after removing the N-palmitoyl glucosamine template, and circular dichroism spectroscopy indicated that the organopolymeric nanotubes had optical activity. Carbonaceous nanotubes were then prepared by carbonization of the 3-aminophenol-formaldehyde resin nanotubes.

Carbohydrate Derived Organogelators and the Corresponding Functional Gels Developed in Recent Time

“…The inherent chirality of N-palmitoylglucosamine ( 41 , Figure 31) induces chirality during its self-assembly in aqueous MeOH, and this property has been utilized as a template for modulation of the chirality of the polymeric resins during their formation based on 3-aminophenol-formaldehyde and also m -phenylenediamine-formaldehyde [127]. This causes the formation of left-handed twisted nano-ribbons; the helical pitch decreases with increasing reaction time.…”