This invention relates the preparation of a soluble precursor conjugated polymer that is codispersed with a carbon nanotube (CNT) or graphene (G) which is then electrodeposited by cyclic voltammetry (CV) or potentiostatic method to form thin films or patterns on surfaces. The key part of the invention is the ability to use the precursor to disperse or de-aggregate the CNT and G such that they form clear solutions. This in tum allows them to be electropolymerized on electrode surfaces as homogeneous films. It is possible to carry out chemical oxidative methods of cross-linking or deposition as an alternative to electropolymerization. Electropatteming is possible with this method based on selectively addressable electrode patterns. Alternatively, the dispersion can be pre-formed as a thin film or pattern on a surface and then electropolymerized afterwards. An extension of the work is the use of any other nanoparticle or precursor polymer that can be electrodeposited in a similar combined manner. Another extension is the use of various precursor polymers or electrodeposition conditions. The end result of this procedure is conjugated polymer CNT or G nanocomposites with subsequent electrochemical, electrical conducting, and optical properties on surfaces or patterns.