Colloidal Hollow Spheres of Conducting Polymers with Smooth Surface and Uniform, Controllable Sizes

A template-directed and surface-modified method for the facile synthesis of polypyrrole (PPy) or polyaniline (PAni) hollow spheres having smooth surface, uniform wall thickness, and a range of controllable sizes is developed. The use of these biocompatible hollow spheres as a new class of contrast agents for sonography (see image) is also demonstrated. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.