▎ 摘　　要

The formation of a homogeneous graphene dispersion is a fundamental prerequisite for the preparation of high-performance graphene-based materials, yet it remains a challenge to obtain, particularly at high concentrations, meanwhile possessing a film-forming ability. In the present work, a new TSiPD center dot+ molecule, consisting of a conjugated core and terminal silanol groups, was synthesized. With the aid of the TSiPD center dot+, a stable graphene dispersion in water was obtained with a concentration up to 10 mg/mL. More interestingly, the graphene dispersion was able to self-crosslink, after direct casting on substrates, forming highly conductive graphene films with good mechanical strength and excellent solvent resistance. The outstanding performance of the graphene films is owed to the condensation of the silanol groups in the TSiPD center dot+ molecules. The use of the aqueous graphene as conductive ink for paper, glass, and even polymer films was demonstrated.