Polymer band gap engineering is a new field on semiconducting polymers research. It is important for applications of semiconducting polymers and improvement of properties of their devices.

The polymer in Bao's process does not need to be removed. The final product is a semiconducting nanotube and polymer ink that can be used to make printable electronics.

Mixing the polymer with commercially available carbon nanotubes in a solvent separates semiconducting tubes from conducting tubes.