▎ 摘　　要

In this work, combining experiment with molecular simulation, we share the result that the adenine moiety has strong physical interaction with graphene, providing a facile way to achieve a good dispersion of pristine rGO (reduced graphene oxide)/GO (graphene oxide) in the adenine-containing polyimide (API) matrix by an in situ method. The good dispersion of nanoparticles made the electrical conductivity of the nanocomposite film that contained 2.0 wt % rGO increase by about 12 orders of magnitude compared to that of pristine API, reaching 10(-3) S/m, and showed a more efficient enhancement compared with adenine-free PI (OPI) as reference. Furthermore, the thermal properties of API were improved by adding rGO/GO, and rGO had a more pronounced effect. This work could inspire us a new physical dispersion system for an ultrathin 2D materials/polymer composite system with attractive functionality and affords broad utilization potential for graphene-based high-performance polymer nanocomposites.