Conductive Polypyrrole and Poly(allylamine hydrochloride) Nanotubes Fabricated with Layer‐by‐Layer Assembly

Abstract

Summary: Conductive nanotubes were fabricated by the alternate adsorption of negatively charged polypyrrole (PPy) and positively charged poly(allylamine hydrochloride) (PAH) onto the inner pores of polycarbonate templates. Nanotubes are obtained by the subsequently removal of the template. Using several microscopic and spectroscopic techniques, we demonstrate that the yielded materials possess a tubular structure and conductive properties. The conductivity of PPy/PAH nanotubes is measured as 0.008 S · cm−1.SEM image of eight bilayer PPy/PAH nanotubes after the removal of the template.imageSEM image of eight bilayer PPy/PAH nanotubes after the removal of the template.

Supramolecular Organization of Polymeric Materials in Nanoporous Hard Templates

“…For example, Ai et al prepared polypyrrole/poly(allylamine hydrochloride) nanotubes consisting of six or 12 bilayers in PC membranes with a D p -value of 400 nm that had initially been coated with poly(ethylenimine) [238]. Again, the observed value of the wall thickness of the nanotubes of some tens of nanometers was much larger than that of corresponding multilayer systems deposited on smooth substrates.…”

Assembled alginate/chitosan nanotubes for biological application

“…Our previous studies have demonstrated that the wall thickness of the assembled nanotubes with the LbL assembly depends in some sense on the number of assembly layer [11,[28][29][30]. In view of this, we performed the following two experiments by choosing different assembly circles.…”

Assembly of Nanotubes of Poly(4‐vinylpyridine) and Poly(acrylic acid) through Hydrogen Bonding

“…[16][17][18] In most cases, the sizes, shapes, and other structural properties of the assembled system can be well controlled by the pore structure obtained by using the template method. [19,20] Herein, we use the template technique combined with the LbL assembly method to fabricate complex nanotubes through hydrogen bonding.…”