Highly Ordered Conjugated Polymer Nanoarchitectures with Three-Dimensional Structural Control

A. Vlad; C. A. Dutu; P. Guillet; Piotr Jedrasik; C. A. Fustin; Ulf Södervall; J. F. Gohy; S. Melinte

doi:10.1021/nl9008937

Highly Ordered Conjugated Polymer Nanoarchitectures with Three-Dimensional Structural Control
Artikel i vetenskaplig tidskrift, 2009

Conductive polymers are a class of materials with vast potential for tomorrow's ultra-large-scale technologies as they combine structural and functional diversity with flexible synthesis and processing approaches. A missing component, with their subtle chemical structure, is reliable building at nanoscale. Here we report on the patterning of polyaniline, a prototypical conjugated polymer, with an unprecedented areal patterning order and density exceeding 0.25 teradot/inch(2), With template-confined growth, through platinum-surface-catalyzed polymerization of aniline, highly ordered arrays of distinct polyaniline nanowires are produced with a typical diameter <= 15 nm and aspect ratio higher than 20. Up-scaling is straightforward. Complex three-dimensional structural control is achieved through a direct pattern transfer via resist- and dose-modulated electron beam lithography. The morphology-modulated nanowires self-assemble in key-lock type architectures induced by the structure asymmetry and nonuniformity of the capillary forces associated with the re-entrant features.

polyaniline

growth

lithography

surfaces

platinum

assemblies

conducting polymers

fabrication

films

nanostructures